How to disassemble and repair a LED lamp
LED lamps today are considered the most economical and durable compared to others. And although their cost is still relatively high, they are increasingly replacing incandescent and fluorescent lamps. Why is this happening? Mainly for two reasons: 1. Incandescent bulbs burn out quickly and have low efficiency, 2. fluorescent require special disposal as they have in the flask of mercury vapor. In addition, by breaking such a lamp at home, you can expose your household to the effects of poison. There are no such problems with LEDs. Throw them anywhere and smash on health, no danger, except for glass fragments, they do not represent.
At the same time an abundance of companies producing these products is very much, and choose among them a quality product,sometimes it's not easy. Yes, and a well-known brand does not guarantee full confidence in the long-term uninterrupted operation of the device. What can I do if the lamp does not shine and I can not change it under warranty? You can try to repair it yourself. Its device is not complicated and does not require special tools for disassembly. This article will describe the disassembly and repair of a standard, budget-grade LED lamp. In addition, one of the variants of the breakdown and its elimination is given. Tools need only a screwdriver, a knife and possibly a two-armed indicator.
If there is no indicator, any "check" is suitable. So, we begin by removing the lens. To do this, insert the knife blade into the gap between the glass and the plastic body and gently move it in different directions.
The diffuser should go out from snaps,and withdraw without problems.
You can see a board with LEDs and a rectifier.
Also installed on the board fuse. In order to make sure that it is not burnt out, we connect the ends of the dialing with its findings. Light or sound indication of the device will show its good condition. If you don’t, it’s going to have to be replaced.
When the fuse is full, disassemble further. At the beginning, unscrew the two screws fixing the board, after which it is easily removed.
Under the board is located radiator in the form of a metal bulb. Heat transfer of the board to the radiator, improves the applied thermal paste on both surfaces. If necessary, it can be changed if it is dried. The usual thermal paste for the computer processor will do. To continue the disassembly, pull the upper part of the lamp body and it can be easily removed.
At the bottom of the case with a cartridge, you can see two metal strips, one end connected to the base, and the other to the holes - where the screws go.
Thus through the screw, from the base to the board is transmitted voltage. The problem turned out to be that over time the contact bent off and did not touch the board screw. From here absence of a luminescence of a lamp. Forto eliminate this malfunction, it is enough just to bend the end of the contact strip with a screwdriver or tweezers.
Of course, you can do it better, for example, by soldering wires to board and socle. Then there will be no problems with the contact. But more often the first simple variant is enough. Now you can assemble the lamp in the reverse order. We put on the upper part with a radiator so that two contacts fall into the holes.
Next, install the board and twist it.
Do not hold tight to do not tear plastic thread. After the screws are tightened, you can check if it works now. To do this, screw it, for example, in a desk lamp. If everything works, put on the diffuser.
but as the lamp burns after repair.
In addition to the above breakdowns, there may be an elementary bloated electrolytic capacitor. It naturally needs to be replaced, and it would not hurt to check the diode assembly before switching on. That's all. Successful repairs to you.