TopFeatured.com

I did a remodel adding a media room (home theater) a couple years ago. Installed inexpensive LED fixtures. They look like recessed fixtures, but they fit into j-boxes. They are installed on a LED compatible Lutron dimmer. They always hummed a little bit, but I figured that was because they were cheapies. It wasn’t bad enough to bother me.

Fast forward to a couple weeks ago. One of the fixtures has been slowing getting louder and louder, and I decided to replace it. New fixture (Halo) is dead silent. Great! But, it looks different from the others, so I replaced all of them. Been great for a couple weeks. Not only have these Halo units been dead silent, but they dim far more than the old ones.

Fast forward to today, I noticed that one of the other new fixtures has started humming! This is in a different location from the previous “worst hummer”.

Pulled it to make sure nothing was wonky like a loose wirenut or something, and noticed that the hum disappears entirely if I disconnect the ground from the fixture. That tells me there’s something introducing noise of some kind on the ground. Does that make sense?

I’m going to grab a different dimmer and see if that makes any difference, but would love to hear other ideas in the mean time. I’ve used these same Lutron dimmers with LED lights all over my house and haven’t noticed any problems anywhere else.

EDIT: Different dimmer made no difference. :- I have a smart dimmer in here now though, so I guess that’s something?

EDIT 2: Noticed the title is wrong, the hum only exists when the ground is CONNECTED