How to solder LED strip

The best option for connecting power to an LED strip is soldering. Connectors do not provide adequate reliability of connections due to the peculiarities of their design. Their spring-loaded contacts weaken over time, and oxidation completely leads to loss of contact.

Soldering of any products is divided into 2 stages:

1. Preparation of the surfaces to be soldered is stripping and tinning.

2. Connection - direct soldering.

How to solder LED strip?
How to solder LED strip?

What do we need

To solder the LED strip we need:

1.soldering iron with a capacity of 25-40 watts.

2. Flux - flux paste such as F2000, various flux gels, LTI-120 or even rosin are suitable.

3. Solder, the most common in amateur radio practice, POS-61, or any other brand of solder with a tin / lead ratio of 60/40%.

4. Connecting wires.

5. Well, the tape itself, which you are going to solder.

Various fluxes and POS-61 solder
Various fluxes and POS-61 solder

A soldering iron that is too powerful can overheat the tape, leading to peeling of conductive tracks or poor adhesion of solder.

The quality and complexity of soldering depends on the quality of the flux. Soldering with rosin is difficult in most cases - especially if the tape is already mounted on vertical surfaces, so liquid and thick flux is better suited, but not solid.

When using active fluxes, remember to rinse them off. Moreover, the connection will work in a direct current circuit, where electrochemical processes are especially noticeable, which will destroy the contact. Most modern fluxes are labeled “requires / does not require rinsing”, or they simply indicate “active flux” or “passive flux”.

On the left is an active flux (you need to rinse off), on the right is passive - you do not need to rinse it off (I do not recommend it, there is too much dirt, this can be seen both in the jar and you will see in the photo of the soldering process, but it does its job well)
On the left is an active flux (you need to rinse off), on the right is passive - you do not need to rinse it off (I do not recommend it, there is too much dirt, this can be seen both in the jar and you will see in the photo of the soldering process, but it does its job well)

Each master has his own habits and characteristics, someone even today uses a hard active flux - soldering acid (orthophosphoric), in this case, subsequent rinsing is necessary, and some do not recognize anything except rosin.

Training

Any LED strip has contact pads to which power or connecting wires are connected. These sites are popularly called "dimes". To solder the LED strip, you first need to prepare the dimes for soldering.

Single-color and unprotected RGB tape contacts
Single-color and unprotected RGB tape contacts

If the tape is protected, IP65, for example, then it is covered with a silicone sheath, before soldering, this sheath is cut with a knife directly near the contacts. If the tape is unprotected (IP22 and similar), then nothing needs to be cut.

Cut off the protective layer (silicone)
Cut off the protective layer (silicone)

Preparation of contact dimes consists in stripping them from oxides and dielectric films. Depending on the condition of these dimes, they may need to be cleaned with fine-grained sandpaper or even rubbed with alcohol to remove dirt and greasy stains. But in most cases, it is enough to wipe the contacts with a stationery eraser or the wooden part of the match. At this stage, it is important not to damage the contacts, but only to clean their surface until a metallic sheen appears.

Then it is better to fix the tape on the table, for this you can use stationery clips, a third hand, or just put something heavy on it.

When the surface is cleaned, tin it. Before doing this, take a look at the soldering iron tip. It itself must be tinned - covered with a layer of solder. At the same time, there should be no build-ups from the remnants of the flux and previous rations, if there are any, wipe with paper, and if it does not help, clean it with fine sandpaper. By the way, there are special sponges for cleaning the stings - they are moistened with water and the hot sting is cleaned in them. Very comfortably.

The tip of the sting must be clean.
The tip of the sting must be clean.

If you do not want to "get" from your mother or wife for a spoiled table later, do not forget to put thick cardboard, plywood or a special mat for soldering under the place of work. A newspaper or a sheet of paper is not enough!

To tin the tape, you need to put a drop of flux on its contacts, and take a drop of solder on the tip of a heated soldering iron and rub it over the surface of the contacts.

When using solder in the form of a wire, it is often not taken on the tip, but is fed directly to the point where the tip of the soldering iron touches and the contact.

A little flux on the contacts
A little flux on the contacts
Touch the soldering iron with a drop of solder, it should flow instead of with the flux and cover the contacts
Touch the soldering iron with a drop of solder, it should flow instead of with the flux and cover the contacts

Do not press with a sharp angle of the sting and do not make great efforts - the movements should resemble stroking and light rubbing. After that, the surface should be covered with solder, and its color should be silvery with a characteristic sheen.

IMPORTANT! When tinning and subsequent soldering, make sure that the contacts are not closed by a "nozzle" of solder!

The contacts should have "pads" of solder
The contacts should have "pads" of solder

Next, the ends of the wires are tinned, which will be soldered in the future. There is nothing complicated here:

1. Strip the end of the wire 2-3 mm.

2. Apply flux to it, here you can already use rosin.

3. Touch the soldering iron with a drop of solder and distribute it over the conductor - if the temperature of the soldering iron is optimal, then the solder itself will spread along the conductor and fill the space between its wires.

I like tinning wires in rosin ...
I like tinning wires in rosin ...

When using rosin, the bare wire is placed on its hard surface and melted by touching the tip of a soldering iron with solder.

Do not hold the soldering iron for too long - the insulation will melt and the exposed part will become longer, which will not add reliability to the connection.

The insulation peeled off the wire from overheating
The insulation peeled off the wire from overheating

Soldering - 7 Connection Tips

Perhaps the main problem faced by novices in soldering - tinning dimes of LED strip, we have already solved. Soldering wires is easy. It is most convenient to do this on a table, if you do it on a product mounted on a wall or ceiling - most likely you will need an assistant.

1. We place the tape so that there is easy access to the junction. We lay the wires so that the tinned ends are above the contact pads.

2. We fasten the tape and wires with clamps, or press down with something heavy.

3. If the wires are rigid and already lie normally on the surface of the tape - solder.

4. If the wires are soft and always strive to bounce off somewhere, then after soldering they will come off the contact before the solder hardens (you can blow). Therefore, we press the wires to the tape or to the table with a finger (if you are an iron man) or a screwdriver (so as not to burn yourself) and fix the positive and negative wires on the corresponding contacts.

5. Wires and contacts are tinned, if there is enough solder on them - they will connect by themselves as soon as you touch with a soldering iron.

6. If there is too little solder, take a little more on the soldering iron and solder.

7. If you overdo it with solder and when soldering you have closed adjacent contacts - apply more flux to the junction and warm up the junction again. The solder will be evenly distributed between the contacts and part of it will go to the soldering iron tip. This way you will remove the shorty. In the most advanced cases, it is easier to unsolder the wire and re-do all the operations.

I held the wires while soldering with a can of rosin, and put the wire cutters on the tape
I held the wires while soldering with a can of rosin, and put the wire cutters on the tape

If you keep the soldering iron on the tape for too long, its surface is darker, the contacts will begin to move along the substrate and completely come off. Do not solder the tape and wires when the power supply is on - you can short-circuit them and the wires (when powered by the car's battery) or the power supply itself will burn out.

Checking the completed work
Checking the completed work

When soldering the waterproof tape, do not forget to seal it. To do this, you can use heat shrink, silicone sealants, or fill the joint with hot glue from a glue gun. It will be funny if you mount and solder everything, while forgetting to put on the heat shrink - you will have to redo everything, do not allow such oversights.

By the way, in coils, the tape is supplied with already soldered "tails" for checking and connecting
By the way, in coils, the tape is supplied with already soldered "tails" for checking and connecting
Read also:
How to cut your LED strip correctly!
How easy it is to connect two LED strips

how to solder wires to LED stripWhen connecting and installing an LED strip, many are frightened off by the need to solder it.

For example, this can be encountered when the tape needs to be shortened, cut, rotated, and then connected to the pads. Or just connect it with wires to a power supply or controller.

It seems to people that only professional radio amateurs and electronics engineers can do this competently. Therefore, they prefer to buy some kind of connectors or connecting wires for the connection. connecting wires with connector for LED strip

However, only soldering can make a really high-quality connection in LED strips.

Disadvantages of connector connectors

When using the connector, the contact on the tape and the contact on the connector, when snapped in, have a fairly small contact area. In what way is this reflected in the end? connector pin connection to tape

Due to the decrease in area, heating occurs. Firstly, it affects the LEDs themselves located close to the connection point. They begin to degrade and lose brightness faster than the rest of their "counterparts" in the backlight. example of uneven glow of LEDs

And secondly, copper without soldering and tinning tends to first darken and then oxidize, with the formation of a greenish coating. That is, oxides are formed that do not conduct electric current. This is characteristic even of not very small contacts on switches with high currents. oxidized contacts on the switch

If your contact heats up, then the oxidation process will occur much faster and more intense. Eventually, normal contact simply disappears. The LED strip begins to spontaneously blink, go out, etc. how to properly solder with a soldering iron

Even if you provide a sufficient contact area, but do not protect the contacts in any way, oxidation processes will still occur sooner or later. copper oxidation process under a microscope

Therefore, soldering is the most reliable and durable way to connect and connect LED strips. oxidized contacts on the connector

Soldering tools and materials

This process is not at all complicated, it is enough to have the necessary materials and observe a few elementary rules.

Here are all the essentials you might need:

  • soldering iron with power no more than 25-40W soldering iron for soldering led strip  
  • thin copper wires with a cross section of 0.5-0.75mm2 wires for soldering contacts on the backlight tape  
  • rosin the best rosin for soldering wires  
  • neutral flux gel neutral fluxes gel for soldering LED strips  
  • knife or stripper for stripping insulation from wires wire stripper  
  • toothpick for easy application of flux toothpick for applying flux  
  • tin-lead solder POS-60 or analog POS-60 solder for soldering the contacts of the LED strip  

Briefly, the whole process should look like this:

1

Preparing a soldering iron

2

Dip in rosin

3

Dip in solder

4

Again in rosin

5

Soldering wires and tape

And now all this is more detailed and with certain nuances.

So, you have the tape and the contact points on it where you want to solder the wires. contact points where you need to solder the wires on the LED strip

First of all, find the markings of which contact is positive and which is negative.

On RGB variants, there will be one common plus (+ 12V) and three minuses (R-G-B). This is important in the future for observing the polarity and supplying power from the unit. 111-payka

Strip the ends of the wires from the insulation. It is advisable to take precisely the multi-colored veins so as not to be confused with the polarity in the future. stripped wire ends for soldering tape

Heat up the soldering iron, touch the solder and dip the vein into rosin. tinning the wire for connecting the LED strip

After that, pulling out the core, immediately bring the tip of the soldering iron with tin to it. The tinning process should occur automatically. Repeat the procedure a couple of times to completely cover the copper core from all sides. how to irradiate a wire core

Now you need to tin the contact points on the LED strip. This is best done with a flux.

Before doing this, do not forget to thoroughly clean the soldering iron tip. dirty soldering iron tip

Dip it in rosin and clean off all unnecessary. This can be done with a special sponge, a simple knife, if the carbon deposits have eaten thoroughly, or use a metal sponge.

The main thing is not to allow any foreign elements to get onto the contact pad.

Next, take quite a bit of flux on the tip of a toothpick and apply it to the LED strip. applying flux to the contacts of the LED strip

Then touch the solder with a heated soldering iron and apply its tip for 1-2 seconds to the soldering points on the tape. soldering LED strip

It is important that the soldering iron is low-power, with a heating temperature of no more than 250 degrees.

What if you don't have a regulator? How to determine the heating temperature?

  • look at the sting. It should be clean, not hot. clean soldering iron tip  
  • when dipped in rosin, the latter should not boil
  • just a little smoke should go from the sting how to find out the temperature of a soldering iron without a regulator  

The maximum allowable time for the tip to be applied to the LED strip is no more than 5 seconds. When using a flux, this happens much faster in 1-2 seconds.

As a result, you should have two tin bumps, in which you will then need to "drown" the connecting wires. preparation of LED strip for soldering

Try on the ends before directly soldering the wires themselves.

They must be stripped exactly along the length of the soldering points. This is usually no more than 2mm.

If the bare ends are long enough, then when bent, they can easily short-circuit together. Therefore, always bite off the excess, leaving the tip as short as possible.

what should be the length of the stripped section of the wire when soldering on ice tape

Touch this tip to the tubercle on the contact of the LED strip and apply a soldering iron on top for 1 second. The tin is melted and the wire is immersed, as if drowning in it. Do the same with the second wire. soldering wires to led strip

As a result, you should have a rather large contact area. But most importantly, this place is closed on all sides with a tin "pillow", which reliably protects the contacts from oxidation.

For even greater strength, the place of soldering can be filled with hot melt glue, and heat shrinkable on top. Then the wires will not fall off even with constant bending. contact protection led strip after soldering

Soldering silicone coated tape

If the LED strip is completely covered with silicone, there is nothing tricky about soldering it either.

Simply, gently use a clerical knife to remove the silicone from the soldering points, and go through the entire procedure described above. how to solder led strip with silicone

Silicon here plays the role of additional insulation of LEDs from external conditions. soldering wires to silicone led strip

If you have a tape with IP68 protection, then after all work with the soldering iron, you will have to seal back the end with the wires.

To do this, try to push the led strip back into the protective shell and fill the entire space in this place with silicone. how to solder IP68 LED strip

Pouring depth at least 10mm. Then you install the plug, also pre-lubricated inside with silicone. The wires are passed through the holes in the plug. how to solder wires to LED strip in silicone and with IP68 protection

Overlapping connection without wires

To solder two overlapping tapes, one of its ends must be tinned on both sides. To do this, carefully remove the double-sided tape from the back and clean the glue layer with a knife. overlapping tape

After that, overlay one piece (the one that was processed on both sides), on the other (tinned only on top). overlapping LED strip

Align the contacts with each other and heat the upper tape with a soldering iron so that the solder melts from the bottom too. connection of two LED strips to each other without wires

True, such a connection is not considered particularly reliable, so it is better to use traditional wires for this purpose.

connection of two LED strips at an arbitrary angle by soldering

If you have a long LED strip (up to 5 meters), then it is advisable to solder the power wires to it from both sides. This will ensure that all LEDs light up evenly.

And what is the best way to solder wires to an extended LED backlight consisting of several parallel segments?

Usually for such a connection there is a common power bus (wires with a cross section of 1.5 mm2), and separate pieces of tape that need to be soldered-connected to this bus. connecting rgb led strip through the controller

In this case, the wires are best soldered to individual pieces at a 90 degree angle. soldering wires to the tape at an angle of 90 degrees

Moreover, in order not to impose one wire on top of the other incorrect overlapping of wires when soldering on the LED strip

the connection of the "plus" can be done not in the same contact place as the "minus", but in the next section of the module. soldering plus and minus wires on different sections of the module

This will not affect the glow of the LEDs.

If you have an RGB LED strip, then you probably noticed that its solder pins are quite close to each other. difference between pins on plain led strip and rgb

Therefore, when soldering such a backlight, be sure to control so that the pads do not close with a tin track. short circuit of contact pads when soldering LED strips than threatens

If this still happened, and you did not notice it, then the least that will happen is that the colors will be mixed up, or some of them will disappear.

But if the positive contact closes and any of the minuses, then this can lead to failure of the power supply unit or the tape itself. 111-blok

What if the pads are still covered with solder? To fix this, bring the tip of the soldering iron back to the pads, heat the tin and swipe between the contacts with an ordinary toothpick.

Soldering process for RGB is the same as for simple single color LED strip. Apply flux (4 drops). application of flux when soldering the backlight tape

Create pewter pads. soldering rgb multi-colored LED strip nuances

After that, the wiring is alternately recessed inside. solder connection of wires to led rgb strip

To tap from 4 or even 5 (RGBW) contacts to the side, and at the same time not interfere with the connection of the second piece of tape, solder only one contact on each module.

Or solder all 4 wires not at the very end, but on the penultimate module.

The tape will still glow properly, regardless of where the soldering is.

Thus, having a normal soldering iron, solder and a good flux, any beginner can learn how to solder an LED strip. Payka

Of course, installation with connectors is much faster and does not require special tools. connection with connectors for ice strips

But if you make LED ceiling lighting for yourself and for many years, then the loss of an extra 10-15 minutes during installation will pay off in the future with a couple of extra years of reliable operation.

However, it is still not worth completely canceling the connectors. If you are assembling some kind of illumination of a complex design, and even high under the ceiling, then you cannot do without them. connecting led strip through connectors

Soldering in such places is not only inconvenient, but can also result in accidental damage to the ceiling covering. And soldering by weight is a pleasure.

When you bring the soldering iron from the bottom up, not always a drop of solder sticks. It is imperative to wear protective goggles during such work.

Therefore, with complex designs, it is certainly better to opt for connectors.

curly complex LED ceiling lighting

It will be easier to rearrange the backlight segments, change the configuration.

1

Even after a one-time soldering-desoldering of wires and tape, it is not advisable to make a connection with a connector in this place.

connection of wires and LED strip using connectors

Due to the difference in the thickness of the layers of tin on the plus and minus, somewhere the contact may be better, and somewhere much worse. Therefore, decide in advance for yourself which connection you will use.

2

Heating up the soldering iron over 250-300 degrees and soldering with such a sting.

temperature control on the soldering iron

Signs by which this can be determined without having a built-in regulator:

  • the soldering iron really starts to smoke
  • rosin or flux literally hiss, boils
  • solder does not adhere well to the tip
  • the solder surface at the tip of the tip looks like loose drops with a matte surface, but should shine
  • the soldering iron tip is covered with black carbon
3

Using an acid or active flux instead of a neutral one.

what flux to use when soldering LED strip

The acid tends to corrode the area around the contact, and the active flux reacts with the metal for a long time after soldering. All this, when manipulating the wires, can lead to damage to the contact even at the time of installation.

4

Unfortunately, in cheap Chinese LED strips, instead of copper contacts, incomprehensible alloys are often used.

differences between cheap and branded LED strip

You seem to follow all the soldering rules: warming up the soldering iron, cleaning it, flux, etc., but the wires still don't want to be soldered.

Of course, there is no mistake of yours, except for one - the purchase and selection of such a cheap tape.

How to solder LED strip?

LED strips are modern equipment used for indoor lighting. Strips with built-in diode elements can be cut at specific points and connected together. If desired, the direction of such an LED device can be set not only in a straight line, but also with a rotation of 90 °. When installing an LED device, it may be necessary to solder its individual pieces, or they can be connected using connectors. You can connect the tape with light diodes with your own hands, without resorting to the services of expensive specialists.

Soldering features

You can solder the LED device using an electric soldering iron, the power of which is from 30 to 60 watts. The soldering iron must be able to adjust the temperature, the maximum heating range must not exceed 300 ° C. If more powerful electrical equipment is used for soldering, then LEDs, called LED components, can be damaged.

The process of connecting tapes by soldering is not limited only to joining two pieces. In order for the LED strip to work, its joint must be sealed after soldering. As an insulating material, glue, silicone or a special tube with heat shrink properties are used. Before the soldering process, the strips are cut only in the appropriate lines indicated by the manufacturer. The incision can be made with scissors.

Before starting the soldering work, the contact pads of the diode tapes will need to be carefully cleaned. For this, the protective coating is removed from the tape using a well-sharpened knife. The action must be performed accurately and carefully so as not to damage the printed circuit board of this lighting device. The soldering process is carried out with a heated electric soldering iron. The wires of the tape must first be tinned by applying a small piece of solder to them - this improves their adhesive properties. After tinning, soldering is started. After completing the connection, the LED device is checked for operability.

If the tape is in working order, a waterproofing plug made of glue or silicone is installed at the joint.

Tools and materials

Soldering the LED device requires certain materials.

  • LED device of the required length, which can only be shortened in places where the manufacturer's markings are available.
  • Connecting wires in a multi-colored braid, which is necessary so as not to confuse electrical contacts with each other. The resistance of the wire is determined based on the consumption characteristics of the LED device, in other words, how many watts of electricity are consumed by 1 m of tape. For each meter of tape, there must be a wire cross-section of at least 0.2 mm.
  • Flux for wire surface treatment - rosin, LTI or SKF. The flux improves the adhesion of the solder and protects the working surface in the place of soldering from the effects of oxygen, which, in contact with heated copper, forms an oxide film.
  • Lead-tin solder for soldering.
  • If the LED device has protection, then after connecting it, you will also need to create waterproofing in the joint area. In other cases, a heat-shrink tube can become insulation, which, under the influence of heat, contracts and tightly wraps around the joint of the two parts of the tape.

To connect LED strips, in addition to consumables, you will also need tools:

  • electric soldering iron with regulation of the heating level;
  • pliers or knife for stripping connecting wires;
  • a heating device - it can be a construction hair dryer or a lighter flame.

When the materials and tools are collected, you can proceed with the installation, connecting the pieces of tapes with built-in diode elements.

The ways

LED strips are produced in two types - with 2 or 4 electrical contacts. If the diode tape has only 2 contacts, then it is one-color, and in order to properly solder the two parts, you need to connect the contact with the "+" sign and with the "-" sign. In the case when the tape has 4 contacts, then this is an RGB version, which with the help of 3 controllers makes it possible to change the color of the LEDs. Some types of tapes are available in silicone, which protects the contacts from moisture. To connect such tapes to each other, the silicone is removed in the contact area, and after the soldering is completed, the insulation is restored.

It is quite easy to connect 2 pieces of LED device, but in order not to miss important steps, it is best to follow the order described in the proposed instructions.

  1. Measurements are taken at the place where the tape is attached. Cut the tape to the desired length.
  2. The contact wires are cleaned from the braid, then their bare copper part is tinned. Sometimes tinning is a certain difficulty, which is associated with the material from which the conductive contacts of the conductive tracks are made.
  3. The wires are also stripped and the free ends are tinned.
  4. The wires are soldered together with the contacts at the optimum temperature set on the electric soldering iron. The soldering time should not exceed 10 seconds, so that overheating does not damage the LEDs and conductive tracks.
  5. The junction of the wires and contacts of the LED device is insulated with a heat shrink tube. If the LED device was enclosed in a silicone protection, then the junction of its two parts is sealed with silicone sealant or glue.

After completing the soldering process, the LED device is checked for operability, making sure of which, you can proceed to the installation of the tape on its permanent place, chosen for lighting the room.

You can connect the segments of LED devices to each other using connectors. A connector is called a special adapter, which makes it possible to create a single electrical circuit from two pieces. No soldering work is required when using the connector. The connectors are selected based on the width of the LED device. Most often, connectors are used for tapes, the width of which is 8-10 mm. When choosing a connector, you should also pay attention to how many contacts it is designed for: if the LED device has 4 contacts, then the connector should also be designed for 4 contacts, respectively.

Connectors are divided into 3 options.

  • Direct view - intended for direct joining of two pieces of LED device. In the process of working on the included tape, the joint will be invisible.
  • Corner view - intended for joining two parts of the diode tape at right angles. As a result of application, an even and clear connection of the tapes is obtained, which is invisible when turned on.
  • Extension view - it is also called flexible option. As an extension, wires are used, which make it possible to join two bushes of a diode tape at any desired angle.

The use of a connector connection is considered temporary, it is used in the case when it is required to connect an LED device, but it is not possible to perform soldering work. Connecting with connectors is a rather expensive process in terms of time and effort.

Connecting connectors can be connected to the LED strip by pressing, piercing or using a special latch.

The process of joining two segments of an LED device using a flexible connector includes certain actions.

  1. Before installing the connector, it is required to remove the insulating varnish from the tape contacts, which is applied there by the manufacturer. Next, the tapes are placed in the desired direction, the polarity of the contacts is determined, which are marked with "+" and "-". When docking, "+" must be connected to "+", and the contact marked "-" is connected to "-". A polarity error must not be allowed, as a short circuit will occur when the LED device is turned on.
  2. The clips of the flexible connector are opened, the contacts are inserted inside, observing the polarity, then the connector retainer must be snapped in. Snapping in is accompanied by some effort and click of the latch.
  3. After closing the latches, the connection of the LED device will be one, and its performance is checked by connecting the system to the power grid before final installation.

The convenience of the connector is that after joining the two parts, additional insulation is not required for the connection. But this connection option has its drawbacks. At the junction of the electrical contacts, the cross-section is reduced, therefore, with prolonged work, heating appears at the junction. Such heating is dangerous in that the contacts of the LED device can burn over time, thereby reducing the conductivity. In addition, overheating can damage their LEDs, which are located near the connector connection. LEDs have a reduced glow intensity or burn out altogether.

Recommendations

To connect LED strips to each other, it is necessary to observe a certain rule, which is that you cannot connect 2 pieces of tape together, the length of which is 5 m.In such long strips, an increased current strength passes and when connecting tapes for distant light diodes there will not be enough required power, which means that these diodes will burn dimly or will be turned off altogether due to a lack of current power.

The next important point is the correct observance of the polarity of the contacts. In order not to confuse the polarity of the contacts, wires of different colors are used to connect them. This is especially important for 4-pin LED strips.

Often, the tapes are connected in the event of a repair. For example, when any fragment on the tape has left the working state, it is cut out and removed, and the ends of the tape are joined together. When connecting the fragments, it should be remembered that it is not recommended to bend around radii of less than 5 cm with an LED strip, since in this case there is a high probability of damage to the conductive paths. When cutting off a piece of tape, you need to make sure that the cut goes strictly according to the factory markings.

When soldering the connection of two parts of the LED device, it is not recommended to use acidic solutions as a flux, which can damage the tape, since the acid can burn the conductive tracks.

It is best to purchase an LED device from trusted manufacturers. ... Such tapes lend themselves well to soldering, in comparison with inexpensive Chinese counterparts, the contacts of which are made of a mixture of metals that are difficult to solder.

How to solder an LED strip, see the video.

When working with LED strips, sometimes you have to combine several pieces into one. A popular connection method is soldering. Here you need to be careful not to overheat the LED and ruin the tape.

In this article, we will tell you how to solder an LED strip.

Tape

What and where to solder

LED strip is a bendable printed circuit board. Two conductive paths run along it (in some tapes there are four). The standard circuit contains LEDs and resistors to reduce the current. The strip is available with open contacts and protected by silicone.

Let's say you want to run the tape exactly at the corner joints. In order not to bend it, but to make a right angle, you have to cut and solder the sections. For this, there are special paths that we cut with scissors:

Pointers

What is required for soldering

First of all, a soldering iron for an LED strip. It should not exceed 25 watts to avoid overheating. And it is best to use a soldering station. Use only a thin or medium sting. A good device has a set of twisted attachments.

Soldering iron

In addition, you will need:

  • Tin-lead solder.
  • Rosin or special paste. Or "artisanal" flux: an aspirin tablet, ammonia with glycerin, olive oil, fruit juice. Another option is pine or spruce resin. You need to melt it and pour it into containers (for example, matchboxes).
  • Some kind of holder to gently grip the soldering board.

The so-called "third hand" is perfect - with a magnifying glass and a pair of clamps.

Holder

But if there is no such holder, you can do without it, it's just not so convenient.

  • Nippers.
  • Knife (to clean the contacts and soldering iron tip).
  • Electrical tape or heat shrink tubing (if you have a hair dryer).
  • Copper wires with a cross section of 0.75 mm.

Preliminary work

  1. Before work, we clean the soldering iron with a file from the accumulated burning. Then we plug it in, warm it up and tinker the sting. If you have not done this before, we advise you to watch the video:

  1. We cut the tape. Recall that for this we have drawn special marks with scissors: Pruning
  2. Attach the board to the holder.

Soldering process

A soldering iron for a radio amateur is the main tool in his practice. It is not for nothing that lovers of crafts with technology are jokingly called “born with a soldering iron”.

Important!

We recommend unplugging the soldering iron from the mains every 15–20 minutes of operation. Moreover, on some devices, tin ceases to stick to the tip due to overheating, and it becomes difficult to solder anything.

You can install a power regulator (dimmer):

Attention!

We recommend that you look at the chapter "Soldering errors" before soldering.

How to solder together

  1. We deserve the contacts of one piece of tape, then another. Be careful not to overheat them!
  2. Cut off the wires (three centimeters will be enough) and solder the pieces together. Cut off
  3. Pull the wires towards you to check the quality of the soldering.
  4. Wrap with electrical tape or put on heat shrink and fix it with a hairdryer.

You can make a butt joint:

Fixation

If the cut of the tape is made by mistake or for other reasons in the wrong place, then you can solder (but this is rough work). We do it in this order:

  1. Clean live tracks so that they are visible.
  2. Gently apply solder to them.
  3. Two methods - butt joint or wire connection.
  4. Check if the wiring is firmly soldered. Just do not jerk them, but pull them a little.
  5. Insulate with heat shrink or tape.

Soldering silicone coated tape

Soldering the LED strip is made difficult by the silicone protective case. We cut the protection with a sharp knife. We recommend buying silicone glue: when soldering, fill the bare area with glue.

Tape

Soldering wires at an angle

Soldered wires often become stiffer when soaked in flux and solder. Therefore, if it is necessary to connect one part of the tape to another at an angle, then it is better to bend the wires in advance. You also need to pick up wires of different lengths so that they do not interfere with each other, being at an angle.

Wires

Hide wires and contacts - with electrical tape or heat shrink. A good method is to fill with silicone those places that are dangerous with electric shock or, for example, water ingress.

Ways to connect two pieces of LED strip

  1. Butt joint without wiring. Fixation
  2. Connection by wiring. It seems to us that this idea is better than the first one. So, the soldering will last longer.
  3. Connector. Allows you to connect parts of the tape in a minute.
  4. With clips.
  5. Special adapters.

When you need connectors

They usually come in handy when running long tape on-the-fly. Relevant for those who want to save time.

Connectors

But there is no absolutely good option between the solder and the connector.

Connection methods: solder, connector and clips

The advantage of soldering is that the contacts heat up less and do not oxidize, unlike the contacts inside the connector. But the soldering is less durable. If you often have to move the tape from place to place, then it is better to choose a connector.

The advantages of the connector are obvious - fast, simple, mechanically strong. But it oxidizes at the junctions (contacts), especially if the room is damp.

Another way is with clips. But it is applicable for connection only in one line.

Compound

The last way is with adapters. In essence, the method is the same as for connectors.

Connecting tapes

Soldering errors

Soldering an LED strip is not difficult, but it is still easy to make annoying mistakes:

  • We strongly do not recommend acid as a flux. It is too aggressive, and besides, it conducts current.
  • Rigid wires that break easily from solder. We advise you to choose soft ones.
  • The soldering iron tip is dirty. Be sure to clean after each soldering.
  • Overheat. When the solder has spread over the board, immediately remove the soldering iron.

In our opinion, these are the most common mistakes.

Finally

We hope we have answered the question of how to properly solder an LED strip. If the information was helpful, write comments and share the article on social networks.

Often, during the installation of the LED strip, it becomes necessary to cut it into several small pieces, and then solder these pieces to the wires.

However, not everyone is familiar with a soldering iron, and therefore questions arise related to proper soldering. Fortunately, this process is quite simple and does not require any special knowledge and skills.

This article will tell you how to solder an LED strip and what is needed for this.

Any LED strip consists of groups of light-emitting diodes connected in parallel with each other. The tape is cut strictly in certain places between these groups. As a rule, the places of possible cuts are indicated by a dotted line or a scissors icon.

Having decided on the length of the segment, contact pads are selected from one of its sides, to which the wires will be soldered. Contacts in the form of printed conductors are located on both sides of the cut line, have a round shape and an inscription: in single-color products - "+" and "-", in multi-color - "R", "G", "B", "-". Before starting soldering, the contacts must be lightly cleaned until they become shiny.

If a protective layer of silicone (IP67-IP68) is applied to the LED strip, it is removed with a clerical knife to gain access to the soldering contacts.

What is required for soldering?

Before starting any work, you need to prepare everything you need in advance. Such a simple process as soldering an LED strip is no exception. To get started, you need the following tools:

  1. Soldering iron with a narrow tip, 25-40 W or a soldering station.
  2. Nippers or pliers.
  3. Scissors if the tape hasn't been cut yet.
  4. Universal Mounting Holder (better known as Third Hand). It will be needed to clamp the LED strip while soldering to the wires. This is a professional tool that not everyone has at hand. It can be replaced with any available weight that can reliably clamp the LED strip while soldering.
  5. Cleaning tool.

When stripping the wires with a knife or scalpel, the wires may become notched, making them brittle and brittle. Therefore, it is recommended to use a special cleaning tool - a stripper.

From consumables, you will definitely need solder and soldering flux. Any alloy with a melting point of up to 300 ° C is suitable as a solder. The most convenient to use are lead-tin alloys in the form of wire. The type of flux is not critical.

It is worth noting that if an active flux is used during soldering, then it is necessary to prepare alcohol and a small piece of cloth or cotton in advance. Active fluxes react with metals for a long time after soldering, so excess flux must be removed.

To reliably isolate the contacts, you will need a heat-shrink tube (also called a heat-tightening tube) with a diameter of about 10 mm, a lighter or matches.

Only copper stranded wires with a cross-section of 0.5–0.75 mm2 are suitable. Their length must be measured in advance, with a margin of 10 cm.

Preliminary work

Before you can solder the LED strip, you need to do a little preliminary work. This concerns the preparation of the soldering iron. For high-quality soldering, the soldering iron tip must be cleaned from burning in advance and cleaned from the burnt layer. Then the soldering iron must be warmed up to operating temperature and tinned with the tip.

The secret of high-quality soldering lies on the soldering iron tip - it is always tinned, that is, there is always a thin layer of solder on it.

The quality of the soldering of two conductors is largely determined by the correct preparatory work, namely, tinning. For those who rarely hold a soldering iron in their hands or with it on "you" it is recommended to practice a little on unnecessary wires so as not to spoil the expensive LED strip.

Soldering process

On the wires of the selected length, the insulation is removed on one side, about 5 mm, and the copper veins are slightly scratched to remove the oxide film. Then, using pliers, carefully twist the veins together to avoid stratification during tinning and soldering.

The prepared posting is dipped in flux or leaned against a piece of rosin. With a heated and tinned tip of a soldering iron, they catch a piece of tin (with a margin) and apply it to the stripped wiring for 3-5 seconds. For better interaction, the wire is slowly rotated, pressing simultaneously against the sting and the rosin.

After curing, the tinned ferrule is shortened to a length of about 3 mm.

How to solder an LED strip: all the ways and mistakesHow to solder an LED strip: all the ways and mistakesHow to solder an LED strip: all the ways and mistakes

For reliable contact, the solder that was applied during the tinning process is sufficient. This is the only way to avoid unnecessary influxes and closure of the contact pads with each other.

If a well-heated soldering iron fails to properly solder the wires to the LED strip for 3-4 seconds, then you should abandon the used solder. Tin-based refractory alloys are not suitable for handling thin conductors adhered to flexible tape. Prolonged contact will result in overheating and peeling of the contact pad.

The final stage consists of checking the reliability of operation and insulation of the soldered wires to the LED strip using a heat shrink tube. The soldering is checked visually and then by connecting the power to the LED strip.

If everything is in order, the contact pads are cleaned of excess flux with a cloth or cotton wool soaked in alcohol (in the case of using a neutral flux, this step can be skipped). Then the contacts are insulated with heat shrink tubing.

To do this, it is superimposed on the place of the adhesion and is evenly heated from all sides.

Read the same

Hello everyone. Today we will solder the wires to the LED strip for the purpose of further connection for our own purposes.

This material is not something supernatural and the vast majority of more experienced users can do this procedure without assistance, but our site is designed for different age and professional categories. Therefore, it is possible that this material will be useful to someone.

In any case, he has a place on the site, since we will work regularly with LEDs and LED strips. Painfully, this is a convenient and beautiful piece, especially for us - folk craftsmen.

Sometimes conscientious sellers on the radio market sell pieces of LED strip with wires already soldered. But this happens, as a rule, very rarely.

In addition, if you buy a five-meter bobbin, then almost certainly you will have to cut it into the pieces you need, and solder wires to each piece. This is what we are going to do now. We will solder to a one-color LED strip.

RGB tape deserves a separate consideration in this issue due to the fact that there are some nuances, so we will consider them in the future.

  • Equipment: - wires; - soldering iron, flux, solder; - LED strip; - knife; - heat shrink tube; - lighter, matches.
  • Safety precautions:
  • - do not cut your fingers with a knife, be careful with electricity.

- no need to poke yourself in the eye with a soldering iron;

Let's get started gentlemen. We take a piece of LED strip. I think you know that LED strip is waterproof and without moisture protection. The second option is cheaper, but not significantly; at the same time, it loses in its functionality and is more susceptible to technical damage. Therefore, we take the first option.

Now you need to remove the silicone from the tape contacts. I do this with an ordinary table knife. There is no particular difficulty in this procedure. Just do not overdo it - do not cut off something unnecessary, otherwise you will have to shorten your tape by at least three LEDs.

How to solder an LED strip: all the ways and mistakes

Be careful, very often small pieces of silicone remain on the contacts. This should not be allowed. Otherwise, the soldering will become unbearable and even if you do solder the wires, the soldering will not be particularly strong and reliable. After these procedures, we see approximately the following result.

How to solder an LED strip: all the ways and mistakes

Now we clean the soldering iron, warm it up well and tin the wires. Please note that I make the contacts on the wires as small as possible. This will eliminate the possibility of accidental closure.

I also ask you to pay attention to the fact that on my tape the contacts are already prepared for soldering and tinned, but in most cases you will receive just 2 copper contacts, which you will need to tin on the tape as well.

How to solder an LED strip: all the ways and mistakes

Now we solder our wires to the contacts on the tape. We do it quickly and accurately. It takes me no more than 1 second to solder 1 contact. the fact is that if the tape overheats, the coating collapses on it, revealing a "flexible board" to the light of day, and this will reduce the reliability of your creation. Therefore, I say again - warm up the soldering iron well.

How to solder an LED strip: all the ways and mistakes

Now it is necessary to properly insulate this matter. I do this in two stages and use two thermotubes of different diameters for this purpose. First, a small one - I put it on the wires and seat it with a lighter.

How to solder an LED strip: all the ways and mistakes How to solder an LED strip: all the ways and mistakes

In the end, it all looks like this.

It becomes necessary to connect the pieces to each other or to the wires of the power supply. There are several main ways: connector, soldering.

The latter approach requires more time and skills in working with a soldering iron, but it is considered the most reliable. Because

not everyone knows how to solder and are faced with this for the first time, in this article we will analyze in detail how to solder an LED strip, what materials are needed, which soldering iron is better to use and many other important issues of soldering.

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What is needed for soldering

Directly, before starting soldering, you need to stock up on all the necessary materials and tools. The most important thing is, of course, a soldering iron. The choice of a soldering iron for an LED strip should be taken very seriously. Too weak - will not allow high-quality soldering of contacts. Too powerful, on the contrary, will melt them.

The ideal option is a soldering station. It allows you to adjust the soldering temperature, select the tip of the desired diameter. If you have a station like this, then that's good. It is not worth buying it specially for this task, because you can do with an ordinary soldering iron.

Appearance of a soldering station with a hairdryer

The optimum power ranges from 20 to 40 watts. This is enough to make a high-quality connection of parts.

Any solder that you have in your stock is used. You can also use steam: rosin, tin. There are no restrictions on this.

It is very convenient to use the universal mounting holder - third hand. The fixture is very helpful in the soldering process. Allows you to clamp the LED strip and calmly solder everything you need to it. But, if there is no such device in the house, do not despair, you can do without it, but you will have to suffer a little.

Let's make a list of what we need:

  1. Soldering iron 20-40 W or soldering station.
  2. Solder.
  3. Universal mounting holder (if possible).
  4. Nippers.
  5. Scissors.
  6. Knife (for cleaning contacts).
  7. Insulating tape (for insulating contacts after soldering) or heat shrinking (heat shrink tube) with a diameter of 10 mm.
  8. Copper wires cross-section 0.5-0.75 mm, stranded (needed for connection).

Cooking a soldering iron

The soldering iron in our business is the main tool. The result of the soldering depends on the quality of its manufacture and preparation for work. Before starting, I recommend cleaning the soldering iron tip from burning with a file. Be sure to warm up to operating temperature and tin the sting.

Do not overheat the soldering iron. During operation, it is necessary to disconnect it from the power supply for 5 minutes, every 15-20 minutes of operation.

Where to solder

An LED strip consists of a flexible board made in the form of a strip, groups of LEDs and conductors connecting these groups. Hence it follows that it can be divided into pieces only in the places of joining of groups. These places are marked with a special line and a scissors symbol, it is in them.

How to solder an LED strip: all the ways and mistakes

We solder in the place of the cut "by scissors"

Soldering or (without soldering), cut by "scissors" will not be difficult. To do this, it is enough to follow a simple algorithm:

  1. Clean with a knife and irradiate the contact pads (conductors) of the LED strip with a soldering iron.
  2. If two tapes are being soldered, then clean the contacts of the second one. If soldering is carried out to the power supply using wires, then they also need to be carefully cleaned and irradiated.
  3. Using a low-power 20-40 W soldering iron, apply solder to the parts to be joined.
  4. Solder the parts to be connected together using wires or end-to-end. For beginners, I recommend the second approach - simple and reliable!
  5. Check the quality of the soldering (how to do this is described below in the article)
  6. Insulate with electrical tape and heat shrink.

The third hand in action

For reference, it is worth noting, depending on the type of LED strip, it has a different number and name of conductors. Color RGB tape: "R", "G", "B", "+". Single color: "+", "-".

You need to solder together only the ones of the same name, for example, plus with a plus, R to R!

We solder in the wrong place of the cut

What if the incision is made elsewhere? The tape cannot be connected with a connector, but you should not throw it out either, soldering will come to the rescue in this case. Let's figure out how to solder the LED strip in this case.

  1. Strip the tracks of the LED strip itself so that the contact tracks running inside the LED strip are visible.
  2. Strip the second part of the tape.
  3. Using a soldering iron and solder, apply the solder to the contact tracks of both tape segments.
  4. There are two options here. Solder the LED strips together using pieces of wires or just butt to each other. The first method is easier - I recommend it to beginners.
  5. Check the quality of the soldering.
  6. Insulate the contact pads with heat shrink or tape.

Example of insulation with electrical tape

Upon completion of the work, it is worth checking the quality of the soldering of the LED strip. To do this, you need to move the wires, pull the connected places to break with little effort. If, with all this, the place of the adhesion does not undergo deformation, then you did everything right.

Summing up, we conclude that soldering an LED strip is a simple process that does not require any expensive tools and serious skills.

For people who know how to solder, this process will not raise questions at all, but for those who hold a soldering iron in their hands for the first time, there will be a lot to learn. We wish you success in this not tricky and interesting process.

If you have any questions, write to x, we will answer.

  • Types of LED installations
  • Tape installation rules: soldering
  • Power supply selection
  • Connecting a diode tape

Today, various models of lighting devices are used to organize interior lighting.

When making a choice, it is necessary to be guided by the quality, availability of installation, energy savings and the acceptable cost of the entire lighting system.

That is why the so-called diode tape is increasingly used to organize interior lighting systems. It suits the listed requirements as much as possible, while providing the broadest design possibilities.

Figure 1. Connection diagram for LED strip.

An LED strip is not your usual light fixture that simply connects to wires. It is made in the form of narrow strips, small LEDs are attached to it. They are connected to each other by thin wires, i.e. soldering is required. There is nothing difficult in this, it is enough to comply with certain requirements and stages:

  • choice of LED strip;
  • soldering work;
  • selection of the power supply;
  • connection of the entire lighting system.

Types of LED installations

Special equipment is required to mount the LED system. You need controllers, power supplies, wires for soldering - all this is purchased after choosing a diode tape.

Today manufacturers offer the following options for the type of execution:

  • colored RGB diodes;
  • diodes 3528;
  • diodes 5050.

Diodes are also classified according to the direction of the glow:

  • face glow models;
  • frontal glow.

By the type of color rendition, they are distinguished:

  • monochrome LEDs giving only one color, for example, red, blue, white;
  • RGB LEDs (multi-colored).

By the degree of security:

  1. Open leaky ones are the simplest option when diode protection is not applied.
  2. Versions with one-sided protection from the LED side.
  3. Models with double-sided protection, which is provided on the diode and base side.

A source: https://gettarget.ru/how-to-solder-the-led-strip-to-each-other-how-to-solder-the-power-wire-to-the-rgb-led-strip.html

How to solder power wire to RGB LED strip

How to solder an LED strip: all the ways and mistakes

LED strips are flexible enough that they can be cut along predetermined cut lines and connected at any point between the copper contacts on the strip. The cutting lines are different for different types of LED strips. Below is an instruction on how to solder the power wire to the RGB LED strip.

1. Soldering iron

How to solder an LED strip: all the ways and mistakesBefore you start soldering LED strips, it is important to make sure you have the correct tool. We recommend using a 20 W - 60 W soldering iron with an adjustable temperature in the range of 250 ° -350 ° C. It is better to use a more powerful soldering iron so that the heating process of the contacts is not long in order to avoid damage to the elements. At the same time, the temperature of the soldering iron should not be too high, so as not to damage the elements. We also recommend using fine rosin-based solder, the tip of the soldering iron should be pre-cleaned with a wet sponge or steel brush.

2. Clean the soldering iron

How to solder an LED strip: all the ways and mistakes

3. Fix the LED strip

How to solder an LED strip: all the ways and mistakes

4. Tin the supply wires

How to solder an LED strip: all the ways and mistakes

5. Solder the black wire to the plus side of the RGB tape

How to solder an LED strip: all the ways and mistakes

6. Wiring control wires

How to solder an LED strip: all the ways and mistakes

After that, warm up the junction with a soldering iron until the solder at the junction melts. The heating must be sufficient to avoid the formation of a "cold junction".

* Cold splicing occurs when only one of the tapes to be connected is warmed up, and the electrical connection is unreliable

7. Check the polarity of the wires

How to solder an LED strip: all the ways and mistakes

8. Check the seam

How to solder an LED strip: all the ways and mistakes

After the solder has cooled down, connect the RGB LED strip to a suitable power source to test the connection

* Poor connection is the result of a cold seal. If sparking or smoke is found, it is most likely a cross or arcing connection.

9. Slip a piece of heat shrink tubing onto the joint.

How to solder an LED strip: all the ways and mistakes

Peel back some of the adhesive tape on the back of the tape so that the heat shrink tubing sufficiently covers the contact area.

10. Warm up the heat shrink tubing.

Use an electric hair dryer to warm up the heat shrink tubing so that it squeezes tightly at the contact. Then reconnect the RGB LED strip to the power supply (control controller) and test the strip in all modes.

A source: http://www.ksinit.ru/svetotehnika/seminars/95-kak-pripajat-provod-pitanija-k-rgb-svetodiodnoj-lente.html

How to properly solder LED strip

How to solder an LED strip: all the ways and mistakes

For this purpose, either connectors or soldering are used. The second method is more reliable, durable and applicable to a variety of non-standard situations.

Therefore, we will consider how and with what tools to solder an ordinary LED strip.

Cons of connector connectors

How to solder an LED strip: all the ways and mistakes

The main disadvantage of connectors is the lack of contact density of the conductors. This leads to a decrease in the area of ​​interaction of contacts and their constant unstable position and, as a consequence, excessive heating. All this eventually leads to such negative consequences as:

  1. Degradation of the crystals closest to the junction in the LED strip. LEDs lose brightness quickly.
  2. Oxidation of contact points. Over time, the LED strip will be unstable and eventually completely extinguish due to the complete oxidation of the conductors and their non-conduction for current.

The only way to get rid of this minus is to eliminate the very phenomenon of loose contact. This can only be done by soldering wires to the LED strip.

When you can't do without connectors

A connector connection cannot be dispensed with in cases where the LED strip is already mounted on any surface. Also in any other cases when soldering is not applicable.

In addition, newcomers often do not cope with soldering equipment and simply burn and spoil the material.

Therefore, it is recommended to start mastering the procedure for connecting conductors with a tape by connectors.

Soldering tools and materials

How to solder an LED strip: all the ways and mistakes

  1. Wires. Soft multi-moist copper alloy, no more than 0.5 mm thick. If you need to connect a thicker conductor, it is soldered or twisted through a short segment of thin and plastic.
  2. Solder. This may be pos-60 or its close modifications with a melting point of up to 300 degrees. The most comfortable solders in the shape of a wire.
  3. Rosin. It is used in a monolithic form or in the form of a brush applied solution.
  4. Flux gel for soldering neutral properties. When using active fluxes after using the excess, it is necessary to immediately remove from the surface of the metal with a cotton swab, sprinkled in alcohol.
  5. Soldering iron for LED tape. Ideally, its power should vary within 15-20 W. More powerful can simply burn the material.
  6. The tool for removing the insulating sheath of the wires.
  7. The segment of the shrink tube is 1.2 cm. It will more reliably fix the wires after they are connected by the soldering method.

Recommendation! Removing the protective shell of wires with a knife or other simple acute item can lead to the occurrence of notches on metal. Because of this, the wire will become brittle and fragile. Therefore, for stripping you need to use stripper.

Ways and order soldering

How to solder an LED strip: all the ways and mistakes

  1. Set the LED tape appropriate length. Usually they are sold in the coils of five meters long. The incision must be accomplished strictly on a special line marked on it.
  2. Cut a piece of heat shrink tube with a length of about two centimeters.
  3. If the silicone layer is located on the contact sites, it is necessary to cut it with a knife with a knife.

Consider how to make the wires to the LED tape correctly in the standard case, as well as when it is coated with silicone, there is a need to connect the bracket without conductors, at an angle and the RGB tape applies.

Solder wires to ribbon

How to solder an LED strip: all the ways and mistakes

  1. Stripping and preparation of the surface of the contacts of the tape.
  2. Cleaning with 0.5 cm wiring from insulating shell.
  3. Logging contacts and conductors.
  4. Sequential soldering of each wire to ribbon with strict observance of polarity.
  5. Wearing a segment of a shrink tube to the place of the spike, so that the nearest diode remains open.
  6. Heating the thermoshusadal segment with the purpose of its shrinkage (you can apply a construction hairdryer, match, lighter).

Shut-off wires are not so difficult. However, in this process, some important points should be taken into account:

  1. The correctly lured surface of the contacts and conductors must be fully covered with a solder.
  2. So that in the future does not confuse polarity, you need to take multi-colored veins.
  3. During the soldering, the sorry of the soldering iron should not touch the contact location longer than 5 seconds, and when using flux - 1-2 seconds.
  4. Excessive wires of wires can lead to uncontrolled adhesion. As a result, a short circuit will occur.
  5. Upon completion of the soldering, the solder substance on each contact should not be in contact. You can use the voltmeter to check.

How to solder a ribbon covered with silicone

How to solder an LED strip: all the ways and mistakes

The only thing that may be required to complete the soldering operation is to sewer the LED tape back, in the event that it is intended for operation in extreme conditions. In addition, it can have a special water isolation. In this case, the place of the soldering should be trying to pull this shell, and the connection itself is to pour silicone with the wires. In the end, the plug is installed on top, from the inside with a lubricated sealant and through the holes of which the conductors are skipped.

Overlapping connection without wires

It is often required to solder pieces of LED strips together without using wires. The procedure consists of the following steps:

  1. The contact pads of both tapes must be cleaned of the insulation layer and film - on one side of the LEDs, and on the other - on both sides, then clean and tin everything.
  2. Place the tapes on top of each other by 3 mm so that the tape peeled on both sides rests on the peeled one on only one side.
  3. Heat up all the contact pads in turn with the tip of a heated soldering iron, so that the drops of solder from both strips are connected to each other (but not between adjacent ones!).
  4. Slide a piece of heat-shrinkable tube (preliminarily put on one of the ends of the tape) to the place of the soldered contacts and, heating it with a construction hairdryer or a small open flame, precipitate.

Soldering wires at an angle

The technology of soldering LED strip at an angle (usually 90 degrees) is no different from the above-described standard procedure and contains all the same preparatory and basic steps. The only difference is in the choice of the place of contacts.

To prevent the wires from crossing or short-circuiting, they must be connected to different contact pads (observing the polarity), divided by the module step - through several diodes.

Such placement will not in the least worsen the operation of the luminaire, however, it will greatly facilitate the soldering procedure and subsequent operation.

RGB led strip

All four pins of the rgb tape must be connected so that they are not interlocked with solder. Otherwise, a short circuit may occur and, as a result, a disruption in its operation - disconnection of any colors, blinking, attenuation and complete shutdown.

Advice! The pads of the rgb tape are very close to each other. Therefore, often in the course of soldering, they can be closed by a mass of solder. You can solve the problem by heating them with a soldering iron tip and passing a thin object between the joints. This situation can be avoided if all four contacts are soldered not in one place, but on adjacent modules - two for each.

Common mistakes when soldering

How to solder an LED strip: all the ways and mistakes

  1. Using a powerful soldering iron, the tip temperature of which exceeds 300 degrees.
  2. Application of acid or active flux. This can damage contacts, wires, solder and conductive strips on the tape.
  3. Instead of quality products, you may come across a fake LED strip with an unknown alloy at the contact points that cannot be soldered.
  4. Thick or excessively stiff, difficult to bend conductors can tear off the solder and damage the tape itself.

If it is not possible to determine the temperature of the soldering iron, you need to pay attention to its operating parameters. An overheated tip begins to smoke, rosin and flux, when in contact with it, hiss and boil, the solder melts quickly and does not stick, and when it hits the tip it does not shine, but has a matte loosened surface, the working part of the soldering iron itself is covered with carbon deposits.

Main conclusions

Soldering is the best and most reliable way to connect the contacts of the LED strip to the wiring, and also when you need to combine two of its pieces into one.

However, there are situations in which you cannot do without connectors.

To properly solder conductors and diode strips, you must have a soldering iron, solder, rosin and some other tools and materials and know the soldering technique, as well as take into account all possible errors.

PreviousNext

A source: https://svetilnik.info/lampy-i-svetilniki/kak-pravilno-payat-svetodiodnuyu-lentu.html

How to remove silicone from LED strip

Often, when installing an LED strip, it becomes necessary to connect the pieces to each other or to the wires of the power supply. There are several main ways: connector, soldering. The latter approach requires more time and skills in working with a soldering iron, but it is considered the most reliable.

Because not everyone knows how to solder and are faced with this for the first time, in this article we will analyze in detail how to solder an LED strip, what materials are needed, which soldering iron is better to use and many other important issues of soldering.

What is needed for soldering

Directly, before starting soldering, you need to stock up on all the necessary materials and tools. The most important thing is, of course, a soldering iron. The choice of a soldering iron for an LED strip should be taken very seriously. Too weak - will not allow high-quality soldering of contacts.

Too powerful, on the contrary, will melt them.

The ideal option is a soldering station. It allows you to adjust the soldering temperature, select the tip of the desired diameter. If you have a station like this, then that's good.

It is not worth buying it specially for this task, tk. you can do with an ordinary soldering iron.

How to solder an LED strip: all the ways and mistakes

The optimum power ranges from 20 to 40 watts. This is enough to make a high-quality connection of parts.

Any solder that you have in your stock is used. You can also use steam: rosin, tin. How fast clear wall from old plaster and paint?

There are no restrictions on this.

It is very convenient to use the universal mounting holder - third hand. The fixture is very helpful in the soldering process. Allows you to clamp the LED strip and calmly solder everything you need to it.

But, if there is no such device in the house, do not despair, you can do without it, but you will have to suffer a little.

Let's make a list of what we need:

  1. Soldering iron 20-40 W or soldering station.
  2. Solder.
  3. Universal mounting holder (if possible).
  4. Nippers.
  5. Scissors.
  6. Knife (for cleaning contacts).
  7. Insulating tape (for insulating contacts after soldering) or heat shrinking (heat shrink tube) with a diameter of 10 mm.
  8. Copper wires cross-section 0.5-0.75 mm, stranded (needed for connection).

Cooking a soldering iron

The soldering iron in our business is the main tool. The result of the soldering depends on the quality of its manufacture and preparation for work. Before starting, I recommend cleaning the soldering iron tip from burning with a file.

Be sure to warm up to operating temperature and tin the sting.

Do not overheat the soldering iron. During operation, it is necessary to disconnect it from the power supply for 5 minutes, every 15-20 minutes of operation.

Where to solder

An LED strip consists of a flexible board made in the form of a strip, groups of LEDs and conductors connecting these groups. Hence it follows that it can be divided into pieces only in the places of joining of groups. These places are marked with a special line and a scissors symbol, it is in them that the LED strip is cut into pieces.

How to solder an LED strip: all the ways and mistakes

We solder in the place of the cut "by scissors"

It is not difficult to solder or connect the LED strip with a connector (without soldering), cut using “scissors”. To do this, it is enough to follow a simple algorithm:

  1. Clean with a knife and irradiate the contact pads (conductors) of the LED strip with a soldering iron.
  2. If two tapes are being soldered, then clean the contacts of the second one. If soldering is carried out to the power supply using wires, then they also need to be carefully cleaned and irradiated.
  3. Using a low-power 20-40 W soldering iron, apply solder to the parts to be joined.
  4. Solder the parts to be connected together using wires or end-to-end. For beginners, I recommend the second approach - simple and reliable!
  5. Check the quality of the soldering (how to do this is described below in the article)
  6. Insulate with electrical tape and heat shrink.

How to solder an LED strip: all the ways and mistakes

For reference, it is worth noting, depending on the type of LED strip, it has a different number and name of conductors. Color RGB tape: “R”, “G”, “B”, “+”. How to remove silicone from an artificial stone sink?

Single color: “+”, “-“.

You need to solder together only the ones of the same name, for example, plus with a plus, R to R!

We solder in the wrong place of the cut

What if the incision is made elsewhere? The tape cannot be connected with a connector, but you should not throw it out either, soldering will come to the rescue in this case. Let's figure out how to solder the LED strip in this case.

  1. Strip the tracks of the LED strip itself so that the contact tracks running inside the LED strip are visible.
  2. Strip the second part of the tape.
  3. Using a soldering iron and solder, apply the solder to the contact tracks of both tape segments.
  4. There are two options here. Solder the LED strips together using pieces of wires or just butt to each other. The first method is easier - I recommend it to beginners.
  5. Check the quality of the soldering.
  6. Insulate the contact pads with heat shrink or tape.

How to solder an LED strip: all the ways and mistakes

Upon completion of the work, it is worth checking the quality of the soldering of the LED strip. To do this, you need to move the wires, pull the connected places to break with little effort. If, with all this, the place of the adhesion does not undergo deformation, then you did everything right.

To consolidate the information received, we recommend that you watch interesting video , the author of which shows by example everything that we have told. An interesting moment is demonstrated starting from the 5th minute of the video - close-up soldering.

Summing up, we conclude that soldering an LED strip is a simple process that does not require any expensive tools and serious skills. How to clean silicone sealant from clothes? For people who know how to solder, this process will not raise questions at all, but for those who hold a soldering iron in their hands for the first time, there will be a lot to learn. We wish you success in this not tricky and interesting process.

If you have any questions, write to x, we will answer.

Additional Information:

Now it's worth figuring out how to solder the wires to the 4-pin LED strip. If the home master has figured out the previous options, then there will be no difficulties for him at all. The only caveat is that wires of 4 colors will be required (the contact marking is indicated in brackets):

According to the method of connection, the products are clamping, piercing and with a latch. Despite the fact that the connector is easy to install and does not need auxiliary insulation, the cross-section at the junction of the conductive contacts becomes smaller. And if the product works for a long time, it overheats. Because of this, the contacts burn out, and the electrical conductivity of the current deteriorates sharply.

LEDs that are close to the connector deteriorate or become dim.

  • With wires. With such devices, wires are connected to the LED strip.
  • Connecting. With their help, two pieces of LED strip are connected to each other.
  • Corner and T-shaped. Designed for corner or “T” connection, respectively.

A source: https://whitestrip.ru/kak-ochistit-svetodiodnuju-lentu-ot-silikona/

How to solder an LED strip together (video)

Low voltage strip luminaires are of limited length. Therefore, if it is necessary to connect individual sections into a single circuit, a natural question arises: how to solder an LED strip? Further in the article, we will consider the technology and basic methods of soldering contacts to each other, as well as how to choose the right consumables (rosin, solder) and a tool (soldering iron).

What and where to solder?

How to solder an LED strip: all the ways and mistakesBefore starting any work directly, it would be nice to figure out what to deal with. Any LED strip can be generally understood as a section of an electrical circuit. It is known to be composed of active components and connectors. The latter are usually wires, but this type of lamp is nothing more than a flexible electronic board. Consequently, the conductor connections in it are replaced by copper tracks, which are hidden under the outer lamination. Without it, everything will look like this:

The role of active components is performed by LEDs, which are soldered with a step fixed along the entire length of the tape, and resistance elements (resistors).

LED lamp: how to make it yourself?

How to solder an LED strip: all the ways and mistakesAs you can see in the figure on the right, the circuit components are combined into separate groups or blocks of three LEDs and the Nth number of resistors (in this case, it is one in the group, but it all depends on the type and its characteristics). These blocks are standardized in lengths (5 or 10 cm) to facilitate installation. In the places of their docking (cut line), you can see contact groups, to which, if necessary, to connect to a network or other tape, and solder is performed.

It makes no sense to go deep into the classification of diode tapes, except from the point of view of design features that affect the soldering. Formally, two groups of flexible boards can be distinguished: conventional (open) and protected (sealed). The differences between them are clearly visible in the illustration below (the sealed diode tape is covered with a ball of silicone or transparent epoxy resin):

  • How to solder an LED strip: all the ways and mistakes
  • Both can have 2 or 4 contact groups. In the first case, we are talking about a single-color LED ("+" and "-"), and in the second - about an RGB tape, the glow color of which can change due to an intermediate controller ("B", "R", "G" and "+ "):
  • How to solder an LED strip: all the ways and mistakes
  • In a tri-color RGB luminaire, three connection points are allocated for each of the color channels (blue, red and green) and the general power supply.

What is needed to solder a diode strip?

In order to properly solder the contact groups of LED lamps, you need to select the necessary equipment, consumables, and also observe the technology and safety precautions during the work.

LED lamp: circuit and device

Materials include:

  • Connecting wires. For ease of installation, multi-colored insulation is chosen (especially for an RGB lamp). The section is determined from the conditions of power and length. As a rule, it should be at least 0.2 mm2 (with a length of less than 1 m),
  • LED Strip Light. The length is selected for design reasons, but it should be shortened only at the designated contact points,
  • Flux or flux gel. These are substances that are used for primary surface treatment (deoxidation, lowering surface tension, improving the fluidity of the solder, protection from the external environment). To work with LED strip, it is better to use neutral fluxes (Rosin, SKF, LTI),
  • Solder. A metal or alloy used as a connecting medium between the ends of the wires and the contacts of the diode strip. Most often, tin-lead solders of the POS type are used,
  • Silicone, glue. Used to seal the connection, in the event that it is necessary to solder protected LED strips,
  • Heat shrink tubing. A polymer material that tends to shrink when heated (for example, with a hair dryer) and crimp the junction of wires. Thus, its reliable protection is provided.

For work, you need to use the following equipment:

  • Soldering iron. It is the main soldering tool that warms up the solder. The power of the soldering iron should not exceed 40 W (some sources give the figure 25 W). Otherwise, there is a risk of thermal damage to the components of the diode strip. The optimum temperature at which the soldering iron works should be in the range of 260 ... 300 ° С. The sting must be cleaned and tinned,
  • Wire stripping pliers. Allows you to remove the optimal length of insulation without damaging the current-carrying conductor (especially twisted). Since this tool is professional and not cheap, in everyday life you can use an ordinary clerical knife, acting very carefully,
  • Hair dryer. Used to crimp heat shrink tubing. Again, for the reasons stated above, it can be easily replaced with an ordinary lighter or matches, only you need to act very carefully.

Choosing and connecting a transformer for an LED strip!

Soldering technology

There is nothing new or special in the process of soldering the LED strip to each other and the connecting wires. Everything is done roughly as follows:

  1. The tape and wires of the required length are cut,
  2. Stripping and tinning of bare ends of wires and contacts on the luminaire is performed. In some cases, this can be problematic due to the material of the conductive tracks,
  3. The next step is to solder the wires to the contacts using the optimal temperature regime of the tool (soldering iron). Soldering time should not exceed 5 ... 10 seconds to exclude possible overheating and damage to tracks and LEDs,
  4. The contact point is crimped with a heat-shrinkable tube.

If you have to solder the wires and the protected tape, then you will first need to clean the contact area from the silicone or epoxy shell. After connection, it is waterproofed: a protective plug sits on the corresponding base. If good enough insulation is required, several layers of silicone or glue can be applied.

In conclusion, it should be noted that in some cases the soldering process becomes more complicated. Then you can use special connectors that reliably crimp the contacts.

A source: https://electricvdele.ru/osveschenie/kak-payat-svetodiodnuyu-lentu.html

How to solder LED strip?

Modern lighting of any premises is organized using various lighting devices. However, the most popular are LED light sources, namely tapes. Firstly, they have a long service life, they are suitable for the interior design of any apartment, office, shop, etc.

Secondly, the tape provides high quality of the generated light and consumes a minimum of energy. Finally, it is distinguished by ease of installation, but many, performing this operation, face the difficulties of soldering. It is worth figuring out how to solder an LED strip, and what rules must be followed in this case.

How to solder an LED strip: all the ways and mistakesPreparatory stage

Before you start soldering, you need to carefully prepare. First of all, the cooking process depends on the version of the LED system. Today, the RGB version is most often used, so on it we will consider how to solder the LED strip.

RGB diodes provide multi-colored light. The wires themselves are also painted in different colors. Therefore, before starting work, it is necessary to carefully study the scheme.

  • In order for the soldering to be of high quality and reliable, it is necessary to prepare the following materials and tools in advance: - a soldering iron and a thin tip for it - it is advisable to use a model of a low-power soldering iron, and additionally protect the nozzle so that adjacent parts of the product are not covered with tin; - in fact, the tin itself, which is solder, and rosin;
  • - sealant or special tube for thermal shrinkage.

What needs to be done before soldering the LED strip?

To properly solder the LED strip, you need to measure the length of the product, and then clearly determine the place of the cut, which you will make later. On the tape itself, there are special marks running along the base (as a rule, it is "stored" in silicone). It is according to these marks that the incision should be made.

After that, you need to cut the product - you can use ordinary scissors for this. True, when performing this process, you must be as careful as possible and monitor so as not to damage the neighboring diodes.

Then the mounting surface must be thoroughly dried and degreased without fail. In order to properly solder the wire, the film must be removed from the base, which serves as a protection for it, after which the diodes must be attached to the surface.

Attention: the maximum bending radius in this case should not exceed 2 centimeters. After you have soldered the sealed LED strip, you should solder all the remaining elements of the lighting system.

Thus, dimmers used for dimming, amplifiers, controllers and other devices are interconnected.

Process features

When work is carried out with multi-colored tape, it is recommended to use stranded wires, the diameter of which varies from 0.75 to 0.8 millimeters. Each color of the insulation must necessarily match the main color of the wire.

If we talk about the color of the output of the system, in this case, you can use a wire, the insulation of which is painted in any unclaimed color. For ease of aligning the LED strips, you can use special devices made of plastic, called connectors.

There are the following types of connectors: - without bending - they are used to connect together diode tapes of absolutely any kind on straight sections; thanks to their use, the joints of the tapes remain practically invisible; - having bends - the products include 2 components equipped with wires; such connectors allow you to connect LED strips of any design and shape;

- angular type connectors are designed for soldering LED strips at an angle of 90 degrees.

Recommendations

Experts who have been engaged in such work for a long time can give a number of recommendations that allow an untrained person in this matter to understand how to properly solder an LED strip with a soldering iron and whether it can be soldered at all. First, you must follow the instructions exactly. If the lighting of stretch or conventional ceilings is being installed, it is advisable to hide the tape under the skirting board - this way it will last longer.

Before carrying out work, you should qualitatively isolate the working area, check that all system components (controller, power supply, etc.) work reliably and efficiently. Do not be too zealous and overheat the soldering iron - this can damage the tape and disable the entire system completely.

  1. The advantages of soldering over the use of connectors are as follows: - tapes connected in this way can bend in absolutely any direction; - the connection is more reliable and durable; - contacts are not subject to the negative effects of corrosion; - soldering does not require consumables - it is enough to have only a soldering iron , tin and rosin;
  2. - the junction of the tapes remains invisible to the naked eye.

The use of LED strips in lighting shops, apartments, hotels, restaurants is very beautiful and spectacular. In order for the lighting system to serve for a long time and efficiently, it is necessary to carefully approach the process of its installation.

A source: https://LedFlux.ru/blog/kak-payat-svetodiodnuyu-lentu/

How to connect pieces of LED strip together. Soldering

How to solder an LED strip: all the ways and mistakes

The LED strip is sold, as a rule, in coils of five meters. At one end of the tape (and sometimes at two) there are wires to which the power supply can be connected.

Sometimes it becomes necessary to cut the LED strip into pieces, which leaves the pieces of the strip without wires. To be able to use such pieces of tape, you can connect them or solder wires to them.

The best and most reliable connection is soldering. Therefore, we need a soldering iron with a capacity of preferably no more than 25 watts, rosin, solder and copper wires (preferably of different colors).

How to properly solder LED strip?

First you need to strip the ends of the wires from the insulation. For the convenience of coating with solder, it is enough to strip about 5 mm.

Now you need to cover the wire stripped of insulation with solder. To do this, we put the wire on the rosin, and touch the copper wire with the tip of the soldering iron. In this case, the rosin penetrates into the twisted wire.

Then, using a soldering iron, cover the copper wire with solder. The solder should completely cover the wire from all sides and fill all the space between the copper wires.

We cover the second wire with solder in the same way.

We remove excess wire with side cutters so that the wires do not close together during the operation of the LED strip. It is enough to leave 2 mm.

  • Now you need to solder the contacts on the tape.
  • We collect a little solder on the tip of the soldering iron, then rosin and immediately, touching one of the contacts of the tape, we make, as it were, rubbing movements.
  • As soon as you see that the solder is attached to the contact, remove the soldering iron so as not to overheat the LEDs.
  • Then we remove the excess rosin around the contacts.

If a small drop of solder has not formed on the tape, then we collect a little solder on the tip of the soldering iron. Then we apply the wire we prepared earlier to the contact of the LED strip. With the sharp end of the soldering iron tip we touch the tape contact, and with the flat side of the wire tip.

As soon as the solder on the wire and on the tape is connected in one drop, remove the soldering iron. Solder the second wire in the same way.

If you need to connect several pieces of tape together, you can use single-core wires. You can get them from this, in simple terms, the Internet UTP cable. Inside it are single-core wires that are fine for us.

First, we clean the copper wires from insulation, then cover them with rosin and solder.

When connecting two pieces of LED strip, arrange them so that the contacts marked with a + (plus) sign are opposite each other, since you need to solder plus to plus, and minus to minus.

We solder the wire to one of the contacts and cut it off, leaving a small piece to connect to another piece of tape. After soldering the second wire, trim both wires.

When soldering the second piece of tape, attach a metal object such as scissors to the connecting wires to prevent the wires from being soldered off the first tape.

If the tape connected in this way is supposed to be glued to a metal surface, it is necessary to insulate the wires connecting the tape. This can be done with duct tape, glue gun, or heat shrink.

We check the performance of our tape.

A source: https://mastergrad.com/blogs/post/11864/

LED strip is widely used in both indoor and outdoor lighting. During installation, it is often necessary to solder the LED strip. And sometimes, when installing lighting, it can be difficult to connect pieces of tape together.

Pieces of tape

LED strip device

The LED strip is a flexible base that is equipped with a printed circuit board with conductive filaments. It operates on a 12 or 24 V DC power supply. There are products on sale that operate on 36 and 48 V voltages, but they are rarely used. Ribbon device:

  1. On the outside there is a diode block equipped with a limiting resistor and 3 parts including a diode. There is a scissor-shaped dividing mark between the blocks. She indicates that the tape can be cut at this point. The wires are soldered to the conductive contacts that are in each block. Also, connecting connectors are connected to the connection point.
  2. An adhesive base is applied to the back of the product. It is covered with a protective shell, which is removed when the tape is installed. The product is glued to a dry, clean surface.

What is required for soldering?

To solder the LED strip, you will need the following tools and materials:

  • soldering iron - 25-60 W;
  • neutral flux and a toothpick for applying it;
  • thin lead solder;
  • rosin;
  • insulation stripper;
  • if there is no soldering iron, then the parts are connected with a connector.

Soldering process

Soldering the LED strip begins with the preparation of the soldering iron. Its sting is heated to a temperature of +300 ° C and dipped in rosin, then solder and rosin again. After that, the wires and tape are connected and soldered.

Soldering iron preparation

Soldering silicone coated tape

In some products, the conductive contacts are coated with silicone. To solder them correctly, you need to clean the contacts. For this, the silicone protection is carefully removed with a sharp knife. If the product has IP68 protection, then the stripped contact is pushed back into the protective shell. The free space is filled with silicone glue. The depth of the bay should be about 1 cm. Then the plug is installed. Conductive conductors are threaded through a technical hole.

Soldering wires at an angle

If the backlight has several strips parallel to each other, then they must be soldered at an angle of 90 °. In this case, the contacts of 2 diode blocks located next to each other connect minus to plus. With this method of connection, the wires are located without an overlay and they do not affect the brightness of the glow of the diodes. If the RGB model is used, then 4 wires are soldered.

Ways to connect two pieces of LED strip

You can connect 2 pieces of backlight in 3 ways: tapes without wires - with a soldering iron, using wires and connectors.

Soldering iron connection of tapes without wires

To solder the strips together without wires, their ends are cut to the level of current-carrying contacts. To do this, 1 piece of the product is cleaned of the adhesive base and the contacts are exposed. Then they are lubricated with a flux and a layer of tin is applied until a silvery film appears. The LED strips are overlapped to each other, adhering to polarity. In order for the tin to firmly fix the contacts, it is heated for 5 seconds with a soldering iron.

Soldering tape without wires

Connection with wires

To solder 2 pieces with wires, a connector is required for a rotary connection of the segments. Before connecting the parts together, prepare the backlight:

  1. The end of the product is cleaned from the moisture-proof coating.
  2. Use a hard eraser or toothpick to wipe the contact pads. This will help eliminate oxides. You can use the tip of a match, it is soft and will not spoil the contacts, but it will eliminate oxidation well.
  3. When the product is ready, the contact nicks are threaded under the spring-loaded contacts. Red wire - plus, black - minus.

Soldering with wires

We solder in the wrong place of the cut

If the cut of the tape is made incorrectly, then it will not work to connect it with a connector. Do not throw away the product, as it can be connected by soldering:

  1. To do this, the paths of the LED backlight are carefully cleaned. When the contact tracks running inside it become clearly visible, clean the second part of the product.
  2. Then, solder is applied to the contact tracks of 2 segments using a soldering iron.
  3. The easiest way to solder 2 lengths is to use small pieces of wire. A more difficult option is to solder the segments end-to-end.
  4. To check the quality of the soldering, the wires are slightly pulled or wiggled. If the soldering point is not deformed, then the job is done correctly.
  5. The contact pads are wrapped with electrical tape or insulated with heat shrinkage.

LED strip repair

To understand why the LED backlight does not work, and to repair it, you can use the following tools and materials:

  • indicator screwdrivers;
  • electrical measuring device - multimeter;
  • connector;
  • soldering iron;
  • solder.

Diagnostics and repair methods for electrical circuits are carried out according to the rules: checking the voltage and integrity of all parts of the lamp. Product repair:

  1. The LED backlight flickers with a constant dim light, sometimes turns off completely. The serviceability of the LED strip power supply is checked by attaching a test lamp or multimeter to it. Flickering occurs when there are power surges, bad contacts in the tape and the power supply. If the backlight has 1 faulty LED, then flickering will appear in one place. This LED is replaced with a new one. If the installation of the product is made at a right angle, then the bending points gradually fail. The damaged area is changed partially or completely.
  2. The tape does not burn completely or goes out, which means that some of its sections have overheated or an incorrect installation has been made. To correct the problem, the bad backlight segment is removed and the connectors or connectors installed.
  3. If the lights are off, you need to test the power supply for the presence of input voltage. To do this, check the phase in the socket with a screwdriver-indicator or the power at the input terminals. The multimeter is set to AC current measurement mode. A piece of tape is used to check the output voltage at the contacts of the luminaire and the output terminals of the power supply. The voltage is checked on the extinguished section. The integrity of the conductors has been compromised if voltage is applied to the backlight and the bulbs do not light up.

The problem of a faulty power supply may be due to a blown fuse, a faulty diode bridge, or a broken track.

When are connectors needed?

Connectors are used when a soldering iron is not available and you need to quickly connect 2 backlight strips or a tape with wires. The size of the connector is selected depending on the width of the backlight. The optimal size is 0.8 and 1 cm. In this case, the LED strip and the connector must have the same number of contacts. Connecting parts are divided into 3 types:

  • straight lines - connect 2 pieces of tape together;
  • for soldering pieces at an angle of 90 °;
  • for connecting wires (corner is formed).

Using connectors

According to the method of connection, the products are clamping, piercing and with a latch. Despite the fact that the connector is easy to install and does not need auxiliary insulation, the cross-section at the junction of the conductive contacts becomes smaller. And if the product works for a long time, it overheats. Because of this, the contacts burn out, and the electrical conductivity of the current deteriorates sharply. LEDs that are close to the connector deteriorate or become dim.

Since there is no soldering, the contacts are oxidized. Copper parts, interacting with oxygen, turn green. Through such contacts, the current passes weaker and spoils the diodes. They gradually fade out, blink and stop burning.

Soldering errors

The LEDs start blinking and fail if mistakes were made during the connection of the LED strips or soldering. The most frequent ones are:

  1. Do not install the connector on conductive contacts that have previously been soldered. Due to the different thickness of the tin alloy, the connection is poor.
  2. If the soldering iron has heated up over +300 ° C, do not solder it. Otherwise, the current-carrying threads located inside the tape will burn out.
  3. You cannot replace the flux with other types of acids. These are aggressive substances that corrode contacts.

Sometimes, observing all the rules for soldering, the diodes still work poorly. This often happens with cheap Chinese ribbons. Such products are equipped with contacts that are made of fragile alloys.

How to solder LED strip

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