Why do LED bulbs lose brightness when turned on?

Igor asks:
Good day, a question of this kind, I turned on the LED bulbs in the hall, turn on the light, they light up for a second, then they dim and the light goes out, which is interesting because I put an incandescent light in one lamp, the problem was solved, if I turn it off, the diode lights go dark again. I would be grateful for an answer or an explanation of the situation 🙂
The answer to the question:
Hello! 220V lamps? What is the mains voltage? Did you try to screw the same lamps into another lamp in another room?

In any case, you need to check the quality of contact connections. Perhaps the problem is poor contact. And incandescent lamps, this problem is not terrible - and therefore burn normally.

It is also possible to increase or decrease the voltage in the network or some kind of interference, the incandescent lamp, in turn, takes on these interference, providing a kind of stabilization, if we formulate it in simple language and not get into the wilds.

It is also worth considering the quality of the lamps themselves, have they not used LEDs before? Maybe you should try to buy a light bulb from another manufacturer and see how it will behave?

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