So I was changing a lightbulb last night…

@holmz The tonearm is carbon fiber, the clearaudio ‘Satisfy Carbon’. I wasn’t really looking for a solution with this thread I just thought it was something interesting to share here. Although after a handful of people recommended ditching the dimmer for a regular switch, I’ll likely do that soon because now if I ever listen to a record with the lights on I’m going to think I hear the buzz.

@vinylandtubes Before purchasing the turntable I’d read some reviews of people having a lot of skipping issues just from foot falls. I had a local countertop company cut and polish a piece of scrap granite to the dimensions of the tabletop under the TT. I’m not sure if the granite is the reason I’ve had zero skipping/vibration issues but it certainly doesn’t seem to hurt. 
 

@edisoncarter Interesting, thanks!

holmz The tonearm is carbon fiber, the clearaudio ‘Satisfy Carbon’. I wasn’t really looking for a solution with this thread I just thought it was something interesting to share here. Although after a handful of people recommended ditching the dimmer for a regular switch, I’ll likely do that soon because now if I ever listen to a record with the lights on I’m going to think I hear the buzz

For sure it is interesting.
That is why is would be nice to know the mechanism that causing it.

I agree on replacing the dimmer, the other option would be to replace the lights if incandescent or halogen are available, and probably the dimmer.
Whether it helps or not I also like the orange colour more, even not around halloween.

The last house had incandescent lights, and the new one has LEDs.

If you change the dimmer and keep the LEDs, then it would be interesting to know if touching the frame results in the same deal happening.

I am assuming that the frame is tied to the safety ground, which means that there is likely some difference in ground potential.
But if that were the case then it make little sense that hum is 60/120 Hz, I would think you would need a lot more voltage.

It would also be interesting to just get an extension cord near the tone arm to see if that also induces the hum.

I had problems with an appliance (Anova Precision Combi Oven) that caused a terrible buzz and excessive heat in my toroidal transformer in Mac amp. The variable speed fan seemed to be the culprit, causing "DC in the Mains". My understanding is that light dimmers are notorious for causing the same issue... I bought a DC Blocker which helped, but didn't solve the problem - so I had to ditch the appliance. Your issue sounds different, as you've described a different symptom, but my experience has made me very leery of dimmer switches... 

+3 bad or improper dimmer switch.

"Hey Doc, It hurts when I touch this...."

Doc:  "Don't touch that!"