DIY street garland repair

In detail: DIY street garland repair from a real master for the site my.housecope.com.

Although the price of garlands is low, sometimes situations arise when you have to repair it. And there are not so many opportunities here. The following will tell you about the simple methods of repairing a Chinese New Year's garland.

Maintenance and repair tips are usually found in abundance on the back of a beautiful packaging box. The process of replacing bulbs is described in great detail, although there are no spare ones in the kit. There are also many safety warnings, instructions for using the garland.

One of the wonderful properties of such garlands is that after lying on the shelf until next New Year, they often do not want to light up, and they have to be repaired. Figure 1 will tell you how to do this.

All malfunctions of such garlands are reduced to three types: wire breakage, loss of contact in the sockets, lamp burnout. After they crumpled the garland in their hands, shook it, felt all the cartridges, swore obscene words and did not achieve results, we have to get down to business seriously.

To facilitate the procedure, the garland should be laid out on the floor, literally, as shown in Figure 1, and instrumental measurements should be taken. But first, lightly tug on the wires, suddenly it will fly out of the cartridge, try to slightly twist the bulbs.

This is best done with the garland turned on, but do not get carried away too much, do not crush the bulbs. Otherwise, you can simply get an electric shock! The method is unsafe, but quite effective and efficient.

Figure 1. An example of repairing a Christmas garland

If these actions did not help, and the garland did not light up, then you will have to go to instrumental measurements. First, "ring" the upper and lower (as shown) halves of the garland with a multimeter. The half, which turns out to be faulty, "ring" several more times, each time reducing the length of the measured section exactly by half. This will greatly reduce the number of attempts. This is the magical power of number two.

Video (click to play).

To test how magical it is, try folding a notebook or A4 sheet in half ten times. You can even fold a whole newspaper, it still won't work, because two to the tenth power is 1024! That is how many layers should turn out in a folded sheet of paper. Therefore, you can even argue with anyone on New Year's Eve about this "intellectual" exercise. All the same, the victory will be yours. If you don’t believe it, try it now!

But, before "ringing" the whole garland with a multimeter, you should make sure that the wiring is not broken off right near the outlet from the power plug. This is a fairly common defect, and not only in garlands, but in almost all forks, especially with a one-time termination.

After the faulty "half" is found, it remains to check the bulbs and the soldering in the lamp holders. From time to time and high temperatures, the soldering simply oxidizes, or the wires break off, and they are quite thin, and here you go, repair.

It happens that the microcontroller of the New Year's garland itself fails, it is already clear that there is nothing to replace it with. It happens that the output thyristors explode, leaving black soot spots on the board.

Thyristors can be changed, fortunately, they are sold on radio markets and in online stores. The price of the issue is 13 rubles apiece. And this is at the price of a new garland of 38 rubles! Although, in fairness, it should be noted that there are similar garlands much more expensive. So all repair options are reduced to finding broken wires, as described above.

Probe for repairing garlands

Checking with a multimeter is undoubtedly good, but poking the device's probes through the insulation of the wires is a thankless task. Special probes created for this purpose will help speed up the troubleshooting process. A diagram of one of them is shown in Figure 2.

Figure 2. Schematic of a probe for repairing garlands

Working with the probe is very simple. You need to start with the garland wire that is included in the phase. In this case, if an electric field is applied to the WA1 antenna, a high-pitched sound is emitted from the BF1 speaker. When the antenna passes the break and goes over to the neutral wire side, the squeak in the speaker stops.

At this point, as they say, options are possible. If you start from the neutral wire, then after a break in the garland, a phase wire will fall under the antenna, and of course, the sound will appear. A DEM-4M capsule or similar with a coil resistance of 100… 200Ω is used as a BF1 speaker. These capsules are used in telephones.

Preparing for the New Year is an amusing, interesting and enjoyable process. The amazing time of the New Year holidays takes a lot of time from people. They begin to think about how the festive table will look like, what dishes to cook in order to surprise guests, how to properly decorate the interior of an apartment or private house. You can also decorate the adjoining territory, garden plot, flower beds, building facade, gates and wickets. For the embodiment of the most unimaginable fantasies, LED street lights come in handy.

A few decades ago, our grandparents could not afford such a luxury: interior light bulbs simply could not withstand too low temperatures and atmospheric precipitation. Modern manufacturers of LED products have learned how to make waterproof and frost-resistant devices that are used even in street diode garlands. We will try to understand the history of these devices, their classification, modes of operation and basic requirements when choosing these products.

The United States of America is considered to be the source of street Christmas lights. There they appeared about 100 years ago. These were bright, eye-catching and unusually beautiful devices, which, due to their high cost, did not immediately become widespread.

The use of garlands on the country's main New Year tree after a while led to their mass production, thanks to which people could afford to use similar products. At first, the multi-colored electric tape appeared as a decoration on the shelves of shops and cafes, and later on the facades and adjoining territories of private buildings.

This miracle of technology was brought to Russia much later, which was associated with a more severe climate and significant frosts in certain regions of the country. Currently, various simplified technologies are used that simultaneously protect the device from the effects of severe frosts and reduce its overall cost, making it accessible to everyone who wants to decorate their home. They are not only suitable for residential buildings. Advertising signs, shop windows, banners are decorated with street garlands.

The main criteria for the classification of LED products of this type are considered to be the power supply method and configuration. In the first case, we are talking about devices that are connected to the electrical network, or powered autonomously from it using a rechargeable battery or batteries. Solar-powered garlands are often used, but this is not permissible everywhere, but only where sunlight is abundant.

When choosing a product, you need to focus on the way of decorating the exterior and configuration:

Garlands "Curtain" and "Rain" are among the most popular varieties. In the second case, a plurality of one- or multi-colored flashing lamps are used with the ability to switch to the overflow effect. An excellent option for lighting roofs, eaves of a building.Curtain is more suitable for larger areas.
The linear garland comes in handy when decorating beautiful shrubs and trees. Often it is used when decorating curved contours, due to the increased flexibility of the material. A good solution when looking for an original design.
You can supplement the house territory with bright glowing figures in the form of snowmen, Santa Claus and other fairy-tale characters.
A standard tape consisting of a flexible board on which multiple diodes are mounted. There are models in one or different colors with a variety of operating modes and specific lengths up to 50 meters. A very easy-to-use product, from which you can create the most unusual shapes.

Outdoor frost-resistant garland "Fringe" or "Icicle" is another option for decorating cornices and canopies. The length of a separate board should not be more than 1 meter. When several LED lights are connected, an unusual running light effect is obtained (like on a runway). The built-in controller causes them to fade out gradually. One lighting fixture can contain up to 10 "melting icicles", installed at a distance of about 500 mm.
Garland "Mesh" is a very complex structure, consisting of several wires connecting LEDs. Well suited for decorating the facade of a building.

In addition, street lights can be made up of LEDs shaped like raindrops, balloons or geometric shapes.

The main feature of any LED string is a huge variety and many operating modes. Each of them is given specific names. Individual controllers with a unique combination of modes are built into the boards.

Let's list the main operating modes of a street LED string:

FIXING - static lighting, when LEDs emit the same color with the same brightness during the entire operation;
CHASING - the bulbs start to light up gradually, after which they slowly fade out (a great option if you want to create an overflow effect or light “waterfall”);
FLASH (blinking) - approximately every 4, 5 or 6 LEDs in the tape start blinking (one of the most common and demanded modes);
CHAMELEON (chameleon) - the product glows brightly, constantly changing its colors;
MULTICHASING (multichasing) - requires the mandatory presence of a controller with several modes of operation.

The more modes of operation the LED string supports, the higher the cost of the product. Do not overpay if you plan to use one or two modes. Before purchasing the device, be sure to check its operability and make sure that all declared modes are in good working order.

There are several basic requirements and recommendations to consider when choosing an LED string:

Check the quality of the plastic case. Cheap plastics will start to crack at temperatures below -10 degrees. The safety of operation of all equipment depends on this.
The length of the garland is one of the important characteristics. As a standard, the tape has a length of 5 to 20 meters, but it can be extended with additional lengths.
Moisture resistance. Check the product packaging. The letter N means the flex board is not waterproof.
Frost resistance. It is important that the letters G and R are indicated on the packaging in the marking of the garland.

When using the product, pay attention to the presence of voltage drops in the network. Even high-quality devices produced by trusted manufacturers can quickly fail due to critically low or high voltage. To stabilize it, you need to use special devices.

When decorating a local area, first of all, you need to decide what effect you want to get in the end. This will affect the size, shape, color choice and brightness level of the diode strip.For example, the LED garland for decorating the facade of a building should be long enough, while the "Fringe" variety is suitable for the porch. Shrubs are decorated with small items. Short sections of LED strip are used to decorate railings and tree trunks, wrapping them in a spiral.

Important! Never ignore the safety rules and do not use LED string lights designed for indoor use, outdoors. These products do not have the required protection. It will not only quickly fail, but also pose a danger to the health of people nearby.

The operating conditions for lighting devices related to outdoor lighting systems are spelled out in the PES. There is also clause 6.4.18, which regulates the use and connection of street lights.

Any architectural lighting of a country house, including New Year's illumination, must be connected to the electrical network via a separate line. The power of the product should be no more than 2 kW per phase. Do not forget that in everything, in length and even power, a margin is required. Another prerequisite for operation is protection against current leakage (overcurrent).

For self-production of an LED garland, you will need several basic components and tools:

LEDs (at least 20 mA each);
electric cable (a cross-section of at least 0.25 mm is selected, preferably 0.5 mm);
resistor element (100 Ohm);
power supply unit (6 V);
sharp knife;
silicone transparent sealant and a gun for its application;
marker;
soldering iron with rosin and solder.

A simple electrical diagram of a Christmas tree garland with LEDs implies sequential switching of each individual element. It is very simple to make such a device. First, determine the distance at which the glowing components will be located, and then use a marker to mark the wire. Usually a distance of 20-25 cm is suitable.

Take a sharp knife and remove the insulating layer at the points of the wire where the LEDs will be connected. In length, each cut should be at least 10-20 mm. Use rosin and apply it to each area. Apply solder on top, due to which a reliable and simplest fastening of the LED to the wire will be carried out. Solder the legs of the glowing element.

An LED soldered to the wire will not be as reliable as it seems. To increase the strength of the product, additional protection is required by insulating the exposed parts of the wire. At the same time, such protection should not interfere with the glow of the LEDs; therefore, transparent materials must be used. A special electrical tape will cope with this task. Use it to wrap the legs of the LEDs and the exposed parts of the wire, and then apply silicone sealant on top.

It remains to connect a resistor and a power supply to the tape, and then test the resulting product.

One of the most common faults of an LED string is the absence of one or two colors during operation. Sometimes part of the flex board fails. To repair the device, disassemble the power supply and make sure all contacts are intact. If you find torn items, then fix them back using a soldering iron. If the power supply is intact, then you should look for the reasons in the main wire. Carefully inspect it and make sure there are no bites and other mechanical damage. If you find any, be sure to eliminate them.

In the event that the garland does not light up when connected to the electrical network, you need to carefully study the power supply and the network cable. Check how well the elements are attached to the electronic board.

Think of an LED string as a simple electrical circuit made up of several elements. Use the following guidelines:

The control unit can always be replaced with a starter used in the operation of a fluorescent lamp. Choose the right wattage so that the LEDs flash at the right speed.
First, you need to check the contacts on each LED. Pay attention to the components located at the ends of the tape. If switching is done using anodes, find the corresponding wiring diagram on the Internet. One great option is to connect the LED lamps at the ends of the strip using cathodes.
To replace a damaged LED, disconnect the garland from the mains. Use the unsoldering to remove the burned-out element, then install a new product in its place. Don't forget about polarity!
In the event of a duralight failure, you must identify the problem area and cut it out. Pay attention to the special cuts applied to the tape. If everything is done correctly, then, having thrown out the non-working part, it will be possible to connect the 2 remaining segments together.

With the help of LED street lights, you can create a festive atmosphere and decorate your backyard in an original way. It is absolutely not necessary to do this only on holidays: all street lighting devices are reliably protected from the effects of numerous factors, including severe frosts, precipitation, heat and ultraviolet rays of the sun, therefore they can be used all year round without the need for dismantling.

To eliminate the likelihood of breakdowns, you should buy electrical products from trusted manufacturers. Do not forget before buying to make sure that the device is working properly and that the actual technical and operational characteristics are stated on the packaging or in the technical passport.

One of the most time-consuming breakdowns is considered the case when one or two colors do not work in the electric garland, for example, only red or yellow and blue, as in the photo below. This indicates that, most likely, the bulbs in the corresponding section have burned out.

To begin with, we still recommend disassembling the switch cover, it is also a control unit, and checking the reliability of all connections - contacts soldered to the board. Immediately we suggest watching a video lesson from a young master, which clearly shows what to do if the wire from the board breaks:

If everything looks in order, it means that with a high probability it is possible to judge that the light bulb has burned out. The fact is that modern garlands are arranged in such a way that all monochromatic lamps are connected in series and if any burns out, the light goes out on the entire electrical branch. To fix a breakdown, it is recommended to proceed as a good old textbook advises: cut the garland in half and ring both sections. Next, act in the same way with the non-working section: cut by 2 and check again and so on to the end, as shown in the diagram.

As a result, you will be able to determine which bulb is not working and replace it. We draw your attention to the fact that it is advisable to use such a repair method if the electric garland is non-separable, as a rule, Chinese.

To quickly fix the garland with your own hands, you can take a tester and attach needles to its ends instead of probes. With the help of needles, punch each of the sections of the circuit sequentially so that the needle passes to the current-carrying conductor, and look for where the resistance of the section is significantly different. In this way, you can find the breakdown and repair it with less effort.

Old Soviet garlands for a Christmas tree (without a box) are more convenient in this regard, because in them, all lamps are screwed into sockets, and it is possible to determine which light bulb does not work without a soldering iron and an ohmmeter by the method of exclusion - taking a working light source and screwing it into all the sockets one by one. Another repair method is to measure the resistance of each lamp with a tester until you find a burned out one.

An example of repairing another difficult malfunction:

Another way to fix a broken electrical garland is to check the integrity of the common wire. On one side of the board, you will see 5 soldered wires: 4 for the glow of each of the colors and one common. Now, if the common wire is cut off, you just need to solder it.

In addition to the light bulb, the reason that one or more colors are not lit in the garland may be a break in the wire responsible for a particular color. This problem most often arises if there are cats or dogs in the house, which, while playing, chew the wires. In this case, you need to find the place of damage, re-twist the current-carrying conductors and insulate them. It will not hurt after this to provide protection for the wires from pets.

If your LED garland does not shine, and you are convinced that it is not about the LEDs, then you should already look at the control unit and the power cord. First, check the integrity of the cord, it may have been interrupted or the contact at the connection to the microcircuit has broken. After that, check how all contact connections are soldered to the board. For example, in the photo below, one of the wires burned out. If everything is working, then the board burned out. You can, of course, buy a new garland if this was a cheap Chinese one, but if you want to fix the product, now we will tell you how to do it.

Instead of a standing control unit, you can use a starter from a fluorescent lamp for 127 or 220 Volts (the only difference is in the speed of blinking of the lights). First, check how the LEDs are connected. If it turns out that the extreme elements of the groups are connected to each other by anodes, you will have to redo the circuit and connect the LEDs with cathodes. This is due to the fact that for normal operation of the starter, the voltage to the anode must be supplied through a 5-watt resistor with a resistance of 15-20 kOhm. In addition, diodes will also have to be included in the circuit, as shown in the diagram below. Diodes are needed in order to pass the reverse current of the network through themselves. In this way, you can redo and thereby repair the LED garland with your own hands at home.

As you can see, you have to work hard to repair the product, so if the electric garland is Chinese, it is better not to waste time and buy a new one. How to choose a garland for a Christmas tree, we talked about in a separate article. By the way, it is recommended to remake it for a starter even if the garland does not flash or does not switch modes and the reason for this is the controller.

We draw your attention to the fact that if it is the LED in the Christmas tree diode lamp that burns out, after which the entire section does not burn, you need to solder the working element strictly observing the polarity!

If one or more bulbs are broken and you want to fix the product, we recommend that you simply replace the damaged light source with a new one. We draw your attention to the fact that the replacement should be done only when the power is off, so as not to get an electric shock. In this, of course, shatterproof lamps are better, tk. such a malfunction bypasses them.

If you don't have a spare microlight at hand, you can safely cut the broken one and connect the wires without it.

Well, and the last thing I wanted to say - if your tubular garland (duralight) does not work, try visually and with a tester to find the problem area and cut it out in the places intended for cutting (marked with scissors). After that, connect the working sections with special connectors, on which the repair will be completed!

That's all I wanted to tell you about how to fix a garland if one color is off or the board burns out. Now, you know what to do to repair the breakdown with your own hands!

It will be interesting to read:

But you need to remember that electric garlands are not just a luxurious decoration for the Christmas tree and premises, but also an electrical appliance. Therefore, it is necessary to provide all the necessary measures for fire safety. Before installing the garlands on the tree, check its technical condition.Inspect for faulty electrical wiring and plug. When inspecting, check the integrity of the insulation; there should be no visible visual damage on it. There must be no strong arcing in the socket when plugging in.

If you notice obvious damage to the insulating material and plug, as well as the release of a strong smell of burnt rubber or plastic, for fire safety reasons, discard such a Christmas tree garland. Better to buy a new, better quality electric garland. This will save you from unpleasant surprises and tragedies on New Year's Eve.

If the garland does not work when plugged into the outlet, and during an external examination you did not find any damage, then most likely some light bulb or poor contact in the plug has burned out, which happens very often.

If the bulbs can be removed, the bulbs are removed and checked one by one. You can check it visually, but it is better with a special probe screwdriver that checks the continuity of the circuit. With the same screwdriver, you can check the integrity of the wires and contact in the electrical plug. Burnt out lamps are replaced with new ones.

Unfortunately, most modern garlands are made non-separable. In this case, you will have to arm yourself with a soldering iron and heat shrinkage. The burned-out lamp is soldered off and a new light bulb is soldered in place of it.

If you are convinced of the health and safety of the garland, then you can start installing it on the tree.

The service life of LEDs is much longer than that of incandescent lamps, therefore, the inoperability of an LED string depends on the integrity of the wires and the quality of the electrical contacts. Repair of the LED garland will consist of repairing contacts and connecting broken wires.They begin to hang a ribbon electric garland from the top of the tree. And then, in a spiral, they gird the tree from top to bottom with it. It will also look great on a New Year tree and garlands imitating a grid. But it is worth choosing for decoration not a rectangular weaving of a garland, but in the form of a conical shape. It will be easier and more convenient for her to decorate the New Year tree by wearing a garland on top.When decorating a Christmas tree with a garland, make sure that the garland cord does not get tangled up in the needles and branches. It is necessary to unfold the bulbs outward so that they shine brighter in the dark. When decorating a Christmas tree, an electric garland is first hung. And only then you need to decorate the Christmas tree with colorful toys and balls, try to hang them so that they are at some distance from the wiring and bulbs. Make sure that they are not pressed tightly against the garland cord or light bulbs. After the garland is hung on the tree, make sure that it is securely fixed. And at the same time it will not fall or sag on the branches of a spruce or a Christmas tree. It is better to prevent misfortune than to regret your carelessness later.If you need an electrician, you can call me in St. Petersburg +7 (952) 393 - 20 - 74 from 9 00 to 21 00 .The holidays have passed and it would be high time for us to arrange New Year's garlands and decorations in wardrobes. But as it turns out, some string lights stop working after one season of use. Although we were going to decorate them for more than one year and more than one holiday. In this case, we get several types of defeat for our lights. Some of the garlands stopped working due to severe frost. The wires in the lights make it cheaper enough for the seller to be more profitable. They are in demand every year, and people are not used to paying attention to quality. That is why a certain problem arises in the hypothermia of the wires.The insulation on them does not withstand, the conductive element itself freezes and, alas, the wires are no longer suitable for connecting LED lamps in a garland. We can get this kind of problem when the wires are broken. Its solution is the simplest. To do this, we need electrical tape or tape and the damaged lights themselves. We connect the break point carefully and isolate it from the environment.So, having looked through the entire chain, we can get quite workers for ourselves, like new ones, lights.But what to do if the garland, after the restoration of the break points, still turned out to be not working. This stage of recovery is more difficult. We look at each light bulb, whether the filament is intact in it. If, after checking, several burned out bulbs are found, we replace them. Attaches particular importance to the final LED itself.If this method did not help us either, it remains only to replace the scheme for turning on the lights into the network. We will take it from completely torn lights. After that, we will most likely restore our light garland. So we made repairs to our lights without resorting to the help of a multimeter and other measuring and test devices. We saved some money and closed the season safely. Next year, the lights will please us again and will not require updating. All good and warm winter :) The article was sent by Maxim Shaikov (#shal).On New Year's Eve, the question may arise of how to fix the garland. The problem is mainly that one of the colors is off. The fact is that the device of the LED strip is not so complicated, and you can do the troubleshooting yourself.It is not necessary to immediately run to the store for a new decoration on the Christmas tree. And the number of possible problems is not so great. This means that by checking all possible options for a malfunction, you can identify the problem, and then successfully fix it.The first possible breakdown is the absence of one of the colors. It is the most common one. Almost everyone encounters her before the New Year.Most often, the reason is that only one light bulb from the entire color range has malfunctioned. Image - DIY street garland repair

And to eliminate the flaw, it is enough to change the unusable part.

How to fix in this case? The difficulty lies in determining which particular bulb is out of order.

But before performing repair work, it is still worth checking the less probable and simpler cause. Having disassembled the control unit, you should make sure that all contacts are securely attached.

If not, then using a soldering iron and tin, you need to solder the contact to the fasteners. After which the garland should function again. If this does not help, then still the reason is in the light bulb, and you need to start looking for it and replacing it.

The essence of the problem lies in the fact that all bulbs of the same color are connected in a chain method. And when one of the links breaks, the whole chain fails.

To simplify the detection process, it is recommended to use the following method:

In the first step, the entire garland is cut into 2 pieces.
Having found which of the half will be faulty, you need to continue the same sequence of actions with it. Repeat the procedure until the number of possible options is significantly reduced.
After finding a faulty light bulb, it should be replaced or simply removed from the entire structure.

This way of solving the problem is suitable for Chinese garlands, which, as a rule, are not collapsible.

An easier way is to have a tester. Needles are attached to the ends of the probes. Further, at each site, breaking through the protective layer, it is necessary to check.

It doesn't matter which side to start the test from, because a broken LED can be anywhere. If an LED is found that is out of order, you can replace it. The most convenient and practical are the old Soviet garlands.

Their peculiarity lies in the fact that you can unscrew and replace any light bulb. Verification can be performed quite simply. This greatly simplifies and speeds up the process, avoiding damage to the wire. The only problem can be in buying the necessary LEDs, because they have not been produced for a long time.

As noted earlier, if the garland does not work completely, then it is much easier to repair it.This is due to the fact that it is much easier and faster to find the cause. Most often, the problem lies in the control box or light cord.

The first thing to do is check the block. The wires could come loose from the microcircuit fasteners. If this is the case, then it is worth taking a soldering iron and tin and returning the wiring to its place. Also, the problem may arise with the board itself. If it burns out, then you should buy a new one and replace it completely.

To replace the unit, you can use a starter with a fluorescent lamp. Before performing the replacement, it is worth remembering exactly how the wires were soldered on the control unit.

When performing work, it is important to turn on the diodes, they are necessary in order to be able to pass the reverse current of the network.

The process is extremely difficult, and doing such a garland repair with your own hands is a rather painstaking work that requires certain skills and knowledge.

You also need to know how to fix the garland in case one or more of the light bulbs are broken. This type of problem is the simplest. Don't make your life difficult.

It is enough to simply replace the broken part. Even if there are no replacement parts at hand, then you should not rush to the store for them. You can simply cut out the area where the problem is found and fasten both ends of the wire with insulation.

It is important to always remember to observe safety precautions. The rule is one and quite simple: you should never perform work if the device is connected to the network. Any contact with a bare wire threatens with an electric shock, which is extremely dangerous to human health.

It is worth paying great attention to insulation, you do not need to save on it. The better the junction is rewound, the safer the device will be for others.

Breaking the garland before the New Year can completely ruin the holiday and mood. But do not despair: even if there is no opportunity to purchase a new one, it is not so difficult to repair the old one.Using the recommendations and having a share of patience, you can determine how to fix the garland and thereby create a festive mood for yourself and those around you.Rate the article: Image - DIY street garland repair

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Hello dear readers! Since the New Year is coming soon, in this article I want to tell you how to fix a garland, if, for example, one of the flowers does not light up or the garland's bulb burns out, you will also learn what to do if the contact wires come off in it.

All modern New Year's garlands are arranged in such a way that all lamps of the same color are connected in series, see the figure below. And it turns out that if one light bulb burns out, then the entire branch of a given color will not burn.

In order to find the cause of the breakdown, the first step is to remove the switch cover (control unit) of the garland, and visually carefully inspect the reliability of all contacts, whether there are any broken wires soldered to the board, etc.

If there is no mechanical damage, then move on. To find the cause of the breakdown, we can be helped; you can read the hidden wiring detector, which I wrote about in detail in this article. The method for detecting a burnt out light bulb is the same as for finding hidden wiring.

Another quick and easy method to repair a garland is to take a conventional tester in resistance measurement mode, attach ordinary sewing needles to its probes. And then, sequentially piercing the insulation of the garland wire, ring the entire circuit gradually, determining the place of the breakdown. You can understand how to do this from the picture below. ATTENTION! Before doing such work, be sure to unplug the garland from the mains.

Another interesting and at the same time simple way of how to find out which light bulb has burned out, you can find out from the video below. I recommend watching!

If you find a burned out light bulb, then you just need to replace it with a new one.But there are times when there is no new light bulb at hand, what to do in this situation? And everything is very simple, cut off the burned-out light bulb, and connect the wires without it (directly).I also want to remind you once again, do all the work with the garland turned off from the network, so that you do not get an electric shock, as they say, safety comes first!If the contact wires come off the control unit board itself, then they need to be soldered in place, if this is not possible, ask a friend who knows how to solder.If the wire breaks in the garland itself, for example, near the light bulb, then, as I wrote above, you can cut the light bulb and twist the wires.Below, there is a video in which everything is clearly shown how and what to do if the contact wires come off in the garland, I recommend watching!