This looked like the best place to put this question.

Last night at practice, my amp starting making a feedback type noise when my guitar was turned down all the way or my tuner is on. It would stop if I kick it and then come back, but I'm looking for a permanent fix. I haven't opened it up to look inside yet but I'm assuming something is loose. When I look through the grates it looks like one of the tubes is a lot brighter than the others.

Any takers?
you probably need 1 or more tubes, if youve had it a while I'd get a full set. Eurotubes sell sets of JJ's for just about any amp.
2002 PRS CE22
2013 G&L ASAT Deluxe
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate