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Hello, the one and only thing that will cause that is a defective switch.
Let me know if you would like to test that (you will need some skills) or are up to replacing the switch yourself.
We can go from there without a time limit.
Thanks, ***** ***** possible that the wire for the LED's is running past a garbage disposal or dishwasher motor and picking up current by induction when either of those units are running...that would be if the lights flicker when unplugged.
aside from a defective switch, that leaves us with a defective mcb... the more you work with it, the more the cause will become clear, we can go from here without a time limit, please rate my work when we finally get this sorted out.
It is possible that the polarity is reversed on one of the other lights in that circuit... try it with all lights off, then turn them on one at a time do discover the culprit if that is the case.
The reverse polarity can be *anywhere in the entire circuit controlled by the same panel breaker.
In rare cases it can be anywhere in the any of the house's circuits
read several of these, not all are precisely on point