Quote Originally Posted by Cliff Rogers View Post
Read the story of the capacitor plague.
https://en.m.wikipedia.org/wiki/Capacitor_plague
Thanks Cliff, that was an interesting read. I don't know when the amp was manufactured, but at least I now know it's possible for the cap to fail catastrophically all by itself, and there may not be anything else wrong. Fortunately I haven't started tearing down the amp for parts (I got distracted testing a chorus/vibrato pedal by playing shimmery ambient stuff), so attempting a fix is possible.

DC