This will be short, as I don't have time to really look close at the pictures....hazy wrote:Thanks, solderstain.
I've pulled V1 and the hum is still there. I've replaced nearly everything that touches V2 - since I think that's the spot - but with no luck.
BTW, the 4 input jacks are metal as I changed them years ago because I like that look better than the plastic ones.
Regarding the plastic versus metal input jacks... I'm a bit confused about the 'metal input jack' comment - those look like plastic Cliff jacks in the picture to me...???? What am I missing? Since pulling V1 leaves the buzz, it's clearly not in Stage 1 of either channel of the amp, so it's basically a moot point...
Since you say it 'just happened', how about telling us exactly WHAT happened? It was all fine and wonderful and one day you fired it up and BINGO - 60 hz hum? Out of nowhere? Or was there an event - tube change, or a tube shorted or failed and you replaced it and the buzz was there afterward? SOMETHING happened.