BeerMeDuffMan
Well-Known Member
I'd start at the switch/dimmer. 60% of the time, it works all the time. If they are low voltage, I'd switch em to line like Duffman suggested.
If its hooked up to a dimmer and you are getting a buzz or a hum, its most likely the wrong sort of dimmer. Low voltage units can be reverse phase dimming, electronic or magnetic low voltage type transformers. If you run the wrong kind of dimmer you can get flickering, no dimming control and in most circumstances humming.