This is a continuation of the popular "Question-Answer" section. This, already 60 in a row, question with just such a title was asked by the reader Vadim. If you have your own answer to the question, then write it in the comments below. I and other readers will be happy to read it.
I quote the text of the question verbatim:
Good day. Turned on the light in the kitchen. Small cotton and burned out LED light. Replaced - it works. On the second day I turn it on in the bathroom, the cotton burned out and there, replaced it - it does not burn. I checked it with an indicator screwdriver, the indicator is on in the switch, but not in the cartridge in the bathroom. Two-key switch for the bathroom and kitchen. Please help with advice.
I considered the issue and advised Vadim within the framework of my knowledge and qualifications as follows:
Tell me about the current situation with lighting - in the cartridge, where the indicator screwdriver showed no voltage, now the light does not glow even after replacement? If so, then there is a malfunction in the electrical circuit in the section from the switch directly to the lamp itself.
The list of faults should include the cable cores that could burn out, as a result of which an open circuit has formed, the junction box, the place where the electrical wiring is connected to the chandelier, cartridge. In any of these cases, the cause is poor contact, which creates "extreme conditions" for the LEDs and causes them to burn out prematurely.
If the contact is not broken and the new lamp burns normally, other reasons are possible:
- Overvoltage - If the lamp is rated for a maximum of 230 V and 245 V is present in the electrical circuit, then the service life will be reduced.
- The lamp power and heating conditions do not match. This reason manifests itself during installation in a closed ceiling, where the light bulb overheats, in the case of using a low-quality radiator.
- Poor quality lamps - many manufacturers provide an affordable price by saving on component parts. As a result, a weak driver is used, which produces a ripple current, or the cheapest LEDs are installed.
- When using a backlit switch, the cause may be constant flickering of the lighting equipment due to the shunting of the contact circuit.
- If the LED lamps are powered from undervoltage, then there may be problems in the power supply.