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Mini3 Grounding Issue?

post #1 of 3
Thread Starter 
Hey All-

I've been reading the forums for a while, but this is my first post.

I recently finished building a mini3 & it sounds great. But there is one little issue. When I touch the volume knob (aluminum) or the case, sometimes I hear a little buzzing sound that only seems to be in the left channel.

The board is enclosed in a black anodized Hammond case. I filed down the rails to bare aluminum on the case the contact the ground rails on the mini3 board. I also checked the board for any cold solders/bridges and reflowed anything that looked off.

I appreciate any help!
post #2 of 3
While running on battery or plugged into a wallwart?
post #3 of 3
Thread Starter 
Thanks for getting back to me.

I think I figured out the problem. It looks like the interconnect I was using had a bad ground. I got the same buzz when using another amp. I guess I should have checked that first...
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