Turntable Hum

Could there be a problem internally with the arm wiring, it seems that a hum from a broken or bare wire might change it's sound when the arm is moved and changes position. Just a thought.

What cartridge are you using? If it happens to be a very high output cartridge like some Grados, they can cause hum.

I have a Stanton 500, a Shure m97xe, and a Shure v15VMR, and the hum is there on all of them...but it's also there without a headshell attached. I'm afraid it's the wiring in the tonearm as well, but I feel reasonably comfortable attempting to replace it. Is doing that something that will cause me to pull my hair out? It seems straghtforward enough.

Have the phonocable wires from the tt been moved? Are they passing near a power supply or ac power cord? Try moving and rerouting the phonocable wires.

Don't worry, buddy...We'll get you through this.

They come out of the turntable, which is mounted on the wall, through an opening in the back of the shelf, and connect directly into the preamp, which sits on a shelf underneath, crossing nothing. They haven't been moved in a year or more, but it could've been that I didn't notice the problem when I moved into my current location. But they're not original; they were replace by the former owner with something sturdier and heavier gauge, so maybe the connections are going.

I've may try wrapping the cables in foil temporarily to see if that kills the problem...at least that could narrow it down.

Thanks!