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220V LED lamp blinks - how to fix it?

Vladimir

Topic created March 28, 2019

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Hello! Need qualified advice.

My 220V linear LED lamp began to blink after turning on. 20-30 minutes, as it were, "accelerates or warms up," and then shines at full strength. Having read on the internet, I think that the reasons are in the smoothing capacitor of the driver, if I understood correctly. There are two on the capacitor in the driver: 1 at 22 µf at 400v and 2 at 2.2 µf at 400v. They write on the internet that this can be fixed by installing a capacitor with a larger capacity.

So the questions are:

Which one is smoothing?
Is it possible to attach the same to it in parallel and thereby increase the capacity by 2 times? And is it even possible to do this and will it help?

I would be grateful to everyone for the advice. Thanks in advance.

P.S. There is no backlit switch. According to the scheme, the switch stands correctly - in the phase break. I enclose the driver photo.

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Visitors Comments

Expert
Vasily Borutsky
Expert
To answer
Good afternoon, Vladimir.
Structural changes to electrical installations not approved by the manufacturer or developer are prohibited by the PUE. Of course, they won’t put them in prison for upgrading the converter, but an improved driver may turn out to be a “mine” - it will someday close, causing a fire, for example, or an electric injury.
I will still answer your questions:
- smoothing capacitor has a large capacity / power;
- parallel installation of the same - will increase the capacity (doubled if the first capacitor has not lost capacity).
I advise you to start the search for reasons by measuring the voltage supplying the house, apartment - note that the readings of the device do not “walk”. Then measure the voltage at the outlet. After that, you can measure the capacitance of the converter capacitors. I think you know the devices.
Slow "burning up" of the lamp can be interpreted as a slow set of capacitance by the capacitor. The appearance of this effect is again explained by the cheapness of the device and its elements - the capacitor quickly “dried up” and lost capacity.
And another tip - look at the voltage of the lamp. If the range "180 ~ 250" volts is indicated, then the lamp is of high quality. If it costs "230 volts" - you have a cheap LED. It is thus typical to blink from interference filling Russian networks. That is, even the replacement of a cheap lamp with an expensive one can solve the problem.

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