#1
I have a Crate Vintage Club 50, its been acting up recently.

Last night, I was playing around with my looper and some oscillating delay in the background, and I started getting some terrible feedback. I turned off all my pedals, and it kept going, so I switched off the amp. I turned it on several other times and it immediately began making the same noise again.

I'm guessing one of the tubes might have gone microphonic, but I'm not an amp expert so I can't be sure.
It was last retubed a year and a half or so I think.

So to the amp experts of GG&A: any suggestions to what this might be and how much it might cost to fix it?
Any advice would be helpful, thanks in advance.

╠═══════╬═══════╣

ENDLESS FEEDBACK MANIPULATOR σƒ τλε τρπ βπστλεπλσσδ

╠═══════╬═══════╣
#2
http://www.youtube.com/watch?v=NAF42EwLzks

Does it do this?

How often do you play?
Do you always let it warm up before you play?
Is the amplifier ever moved while the tubes are still hot/warm?
Guitars:
Gibson Les Paul Standard
Gibson Explorer New Century
Gibson RD Artist
Fender American Standard Telecaster

Amps:

Framus Cobra
Marshall JCM800 2203 - 1960A

Pedals:

Crybaby 535Q
Rockbox Boiling Point Overdrive
Last edited by R.D at Oct 24, 2009,