Weird pickup humming issue...not a grounding problem

[Aaron Cheney]

I'm having a hum problem with a bridge position JB. Before that I had the same problem with a DiMarzio Breed. Same guitar, same wiring, just different pickups. It is not a grounding problem...at least not one I've encountered before. Here is what happens:

The pickup behaves normally. Normal noise. When I put my hands on the strings or any metal part, what little hum there is goes away, as per normal. However, if I keep my fretting hand on the strings, then pass my picking hand over the pickup, particularly the slug coil, (touching nothing) it begins to hum. Again, I am grounding the string with my fretting hand so the normal hum is quiet. As a bring my picking into the proximity of the pickup it begins to hum.

And again, it has happened with two different pickups in the same guitar.

Anybody have any idea what is going on here?

 

[Ptolemaeus]

Re: Weird pickup humming issue...not a grounding problem

You wouldn't happen to be wearing some sort of digital device on your wrist, would you?

 

[Vasshu the humanoid typhoon]

Re: Weird pickup humming issue...not a grounding problem

Volume pot is probally 500K right?
Impedance is high, and the coils are not that well shielded.
It will cause hum.

 

[Aaron Cheney]

Re: Weird pickup humming issue...not a grounding problem

Nope...not wearing anything on my wrist. Pots are 500k YJM pots.

I have lots of guitars with uncovered humbuckers. It's only this guitar, for some reason. It's not a bad pickup, since it seems to happen with any humbucker I put in there. It's weird.