Okay... i've been chasing this around for awhile and tonight it just got worse!!! In this pro junior that i've hacked on, everything was peachy after my mods for about 3 months or so. Beautiful sound, pretty quiet, it got used every day and I loved it!!! THEN, a few weeks ago, this intermittent staticy noise started. I replaced the plate load resistors and swapped every single tube (all 4 haha) to NO avail. I looked around the amp for dodgy connections, re-flowed any joints that looked suspect... nothing. Did the 'chopstick test' (actually a toothbrush for me heh) and NOTHING would change no matter what I tapped, poked, pushed around, or prodded. One cap seemed like it might have had some effect, so I changed it, but no diifference. The problem persisted no matter what the volume setting, but if I removed any one of the two preamp tubes, it would stop. Pulling either power tube made no difference but pulling both power tubes of course stopped it. Well, tonight things suddenly got worse. Plugged it in to de-bug again, and the static was worse, more constant... then it gradually quieted down as the amp warmed up. Then I realized EVERYTHING quieted down... I was getting no sound from the amp at all! I did some readings... I've got this amp modified for adjustable fixed bias with 1 ohm resistors between cathodes and ground so I can check bias. NO MATTER where I set the bias trimmer, I can't get over about 9.5 ma to either power tube! Even swapped in a new set of power tubes, to no avail. Plugging in a cord and turning it ALL THE WAY UP, it will pass a very small amount of signal. Like, you can hear it if you listen for it but it's not even practicing volume. WHAT THE HELL is going on here? Any ideas? I have no clue what's up. This amp is really useful for me, I bring it to rehearsals and practice with it constantly. School started this week and since i'm getting this master's jazz degree I need a "throw n' go" amp for all the classes/rehearsals and this was THE ONE. I need to fix this thing. Any ideas? Thanks!!! you guys rule.