Humming through speakers.

[Djanvk]

So I have a humming coming through my speakers, doesn't adjust when I change the volume. The amp I'm using is a 70's Yamaha amp and only a turntable is hooked up to it. Now I figured out stops or the humming decreases when I touch the power strip. So I guess my question is there anything I can do to shield my amp from this power strip. My amp and TT are on a small table/bench looking table under my television with a Xbox one and a Raspberry Pi connected to it.

The humming is irritating, I've tested it by setting the amp and TT away in a separate area away from where I normally have it and it was totally quiet.

Any Ideas besides moving it somewhere else?

 

[Jeffery]

Sounds like a classic ground loop. Does it hum when the TT is disconnected? Can you put a cheater plug (no ground) on the TT, and then ground it to the amp?

About a million combos of stuff will cause a ground loop, there's a few different suggestions in this thread

http://www.audiokarma.org/forums/index.php?threads/ground-loop.8395/

 

[Djanvk]

It does hum still without anything but the speakers plugged into it.

 

[Will S.]

It does hum still without anything but the speakers plugged into it.

How about when you plug it directly into the wall instead of the power strip?

 

[chef free]

Tried flipping the plug over? Is the TT plugged in to the receiver? Try flipping the TT plug.

 

[nj pheonix]

Does it hum on the line level inputs or just the Phono input?