Sambd92

Hello,

I have a Peavey Classic VT 212 combo. It's either a late 70s or early 80s model. When I plug in my guitar and turn up the gain to around 12 o'clock, it starts a very high pitched squeal. I can hit a chord but get no sound, and the squeal remains the same pitch.

What would cause this? I have little knowledge about amps, so I'm hoping it's something simple enough that I can either fix myself by following instructions or something that can be done cheap in a repair shop.

Thanks in advance!

trashedlostfdup

if its a tube amp,

look up "eraser test" or "pencil test" and do it on your preamp tubes (the small ones) if it makes noise when you tap it the tube has gone microphonic. then buy new tube pull out the old one (after removing the metal shrouding if it has it still) and pull them straight up. take new tube push it in and you are likely good to go.

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Sambd92

Thanks, I'll try that out.

Blktiger0

+1

Likely a microphonic tube

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