responding to http://www.homeownershub.com/mainten...ne-723902-.htm
DA wrote:
David L. Martel wrote:

Inductors and transformers sometimes do hum. The OP needs to open
this
lamp up and see what's in there. When he has it open he can listen to
find
the noisy part.

And look on the bright side, too: if it wasn't for the inductor, some of the LEDs in that light will have already fried. I have a string of LED lights made Lights of America that just happen to not have the current limiting inductor and they last for about 1 use average (not 1hr, just one use - they burn up when you turn them on - so you used them once, turn them back on again and they're gone). I've been following this LED light hacking/repair saga for years now: http://elabz.com/hacking-lights-of-america-led-lights/ and it looks like it comes down to the manufacturer saving $0.02 on an inductor that's causing the light to fail.

Also on the bright side: if you can hear it humming, it must be a larger inductor (and it would have to be for a 15W LED) and so it would be easy to identify and replace - this is definitely not an SMD part you can find in smaller lights. And yes, I would definitely open it up and replace the $1~$3 inductor given that it was a $60 light.



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