Man, this one sure sounds like a bad power switch to me! It **does not** sound like bad filter caps! It *could* be a bad tube, but the flicker really suggests that the contacts on the power switch are arcing and permanently damaged. I would fire the tech that gave you the bad filter cap assessment, and get the power switch replaced.
Tube amplifier bad caps
Hey,
My integrated tube amp has been experiencing the symptoms of bad filter capacitors. Crackling in my amp is so bad on both channels that I'm afraid ALL of the filter caps will have to be replaced. Tube swapping and tightening the socket pins has had no effect so I'm lead to believe bad caps are the problem.
A pic similiar to the inside of my amp can be found here. Are the can caps or the axial caps what I should be looking at replacing? I'm confident I can do the repairs myself (purchasing caps, discharging old caps, soldering, etc.) since I'm afraid of what the price tag might be for such a repair by a professional repair shop.
My integrated tube amp has been experiencing the symptoms of bad filter capacitors. Crackling in my amp is so bad on both channels that I'm afraid ALL of the filter caps will have to be replaced. Tube swapping and tightening the socket pins has had no effect so I'm lead to believe bad caps are the problem.
A pic similiar to the inside of my amp can be found here. Are the can caps or the axial caps what I should be looking at replacing? I'm confident I can do the repairs myself (purchasing caps, discharging old caps, soldering, etc.) since I'm afraid of what the price tag might be for such a repair by a professional repair shop.