Fender Twin Reverb. Silverface era, AA270 — one of the earlier ones, probably 1970ish. In need of some general maintenance. It had a cap job before it came to me, but there are lots of drifted and heat-damaged components throughout the power section, and inexplicably, the bias supply caps are original.
Fender Hot Rod DeVille guts. This one just had an arc from pin 3 to the backside of the grid-stop resistor on one of the power tubes. From the looks of things it was caused by a droplet of some beer-like substance, or maybe an exploding insect. Cleaned up the arc trace and installed new power tubes. The amp had the original Fender/Groove Tubes “6L6B” power tubes, which of course were starting to show their original labels — Sovtek 5881s.