On the eve of New Year's Eve, the festive mood can be spoiled by an idle garland. For all the troubles, there is no longer enough time to buy a new product, and I don’t want to leave the spruce tree without blinking lights. You can fix the garland yourself, all products are based on a certain scheme. It is enough to understand the causes of the breakdown and eliminate the identified problems.
Content
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Possible causes of breakdown
- Broken lamps
- The whole garland is off
- One color does not work
- Repair of a Chinese product
Possible causes of breakdown
Before proceeding with the repair of a faulty garland, you need to identify the causes of the problem. The problem might be as follows:
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frayed wires on the plug; - burnt out lamps;
- blown fuse or circuit itself;
- malfunction of the controller;
- malfunctions in the operation of LEDs;
- open connection of contact with cartridges.
For some, one or two lamps on a garland do not stop burning. The product continues to be used, although it does not look aesthetically pleasing. Moreover, such a problem is easy to fix.
Broken lamps
One or more broken bulbs are easy to replace. The garland is disconnected from the network, the broken parts are removed and new ones are screwed in their place. If you don't have a new part at hand, you can cut off the idle cartridge and connect the wires. To do this, you need a clerical knife and electrical tape to match the color of the wires.
The cartridge of the broken part is cut off with a knife. The contacts are stripped from the rubber sheath, and the two cut pieces are twisted together. The turns are tightly wrapped with insulating tape. The garland is connected to the network and its work is checked. If the wires are connected correctly, the product should work. If the product will be used for several more years, then it is better to replace all fragile lamps with unbreakable parts.
The whole garland is off
In some cases, the garland does not completely light up, although all lamps are in good working order. Then it is necessary to check the operation of the power cord and the control unit. First, they check the integrity of the wire - it can be broken or broken. Then inspect the contact connections of the board.
If everything is in order with the contacts and the cord, then the problem lies in the board. The control unit can be replaced with a 220 V fluorescent lamp starter. It is necessary to check the connection of the LEDs, they can be connected by anodes or cathodes. In the first version, the circuit is completely redone and replaced with a cathode connection. Replacement is mandatory, since the normal operation of the starter is ensured by the fact that the voltage must be supplied to the anode through a five-watt resistor. Diodes are also connected to the circuit, the reverse mains current passes through them.
This method of repair is used if the controller has stopped working, as well as when the lamps do not flash. It is better not to repair the scheme of a cheap Chinese product because of its fragility.
One color does not work
In multi-colored products, certain colors sometimes stop working. The cause of this breakdown is a problem with the color sector. First of all, they disassemble the power supply and check the connection of all contacts. If everything is in order with him, then the problem is a burned out lamp.
In modern products, LEDs of the same color are connected in series, therefore, when one lamp burns out, the entire section stops working. DIY LED garland repair is troublesome: it is necessary to cut it in half and check the lamps, then each half is divided into two more parts and so on until the end of the product until the damaged part is revealed.
It is possible to use a needle tester instead of probes to check sections. At each section of the circuit, a current-carrying conductor is sequentially pierced with a needle and the resistance readings are compared. Near a broken lamp, the indicator will differ significantly from the rest. This is how non-separable electric garlands are repaired.
For Soviet products without a switch box, all LEDs are screwed into separate cartridges, so the malfunction can be found by attaching a working part to each cartridge. And also a tester helps to find the burned-out area, they measure the resistance of each light bulb.
Repair of a Chinese product
Chinese garlands with fixed lamps can also be repaired. Pre-procured:
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several identical garlands, they will serve as a donor of parts for a damaged product; - tester;
- insulating tape;
- new lamps;
- wire cutters and a utility knife for working with wires.
The garland is disconnected from the network and the controller is disassembled, the soldering of the wires in the board is checked. Two pads for connecting a power cord are attached to one side of it, and five for color channels are attached to the other. Moreover, one is located separately from the four, a common wire of all channels is connected to it. After checking the adhesions, the controller is closed.
Sometimes there are lamps in Chinese products that are short-circuited when they burn out. Such a diode has less resistance than other lamps. The defective part is replaced by first de-energizing the garland. All connections must be soldered and insulated with tape. Due to the lack of shorting parts, the entire section of the same color goes out. In this case, check the sections of the garlandcutting it in half. Then the lamp is replaced, all cuts are connected and insulated.
Do not throw away your spoiled Christmas tree garland. All breakdowns can be repaired by yourself. And also a broken or burnt-out lamp cannot be closed, since the remaining diodes will begin to receive a higher voltage. This will cause them to burn out. After repairing the product, inspect the entire cord and connections.isolate open areas.
