Believe V1 corresponds to channel 1 as per the manual. I did try swapping that and the other 12AX7's and 12AT7 but had no luck. No damage to pins or sockets from what i can see.
Temp fix i have is a noise gate in the effects loop but need to get this fixed. Have to send it in to get it looked...
Had posted this on another page that had a discussion about this issue and thought I’ll check the Mesa forums while I wait for Mesa support to get back to me.
Channel's 2 & 3 on my TC50 are noisy (crackle & hiss)...channel 2 isn't too bad but there's a lot of crackle & hiss on channel 3.
I...
