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RE: Guitar Tube Amp Rebuild - Harmony H305

in #palnet • 5 years ago

That's a cool old vintage amplifier!
I can imagine that a lot of the electrolytic capacitors have gone bad, that's pretty common in old tube amps. There may be a few resistors that have gone out of tolerance also, usually the plate resistors on the tubes drift out due to the heat in use if the amp is pushed regularly. They seldom fail, but they can go out of tolerance.
Do you have a schematic for the amp?

5 years ago in #palnet by
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     5 years ago 

    Hi there @amberyooper! Great to hear from you. Yes, this is a cool one. I've replaced 3 capacitors so far and there another 8 or so to go. I've done this job in the past but never dealt with resistor replacements. Once I get the capacitors done I will see where we are.

    Thanks for the input. I will keep you posted.

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