Came in with no power. Fuse on board is blown. It's a 10 A so that is odd. Checking the filter caps (They're IC)

Replaced the filter caps that were on the edge of leaking. No longer blowing fuses.

The bias isn’t very close between the pairs. Swapped them and it made it worse, so swapped them back. It plays well, and it will need new power tubes at some point, but there are a few miles left on these.

Returned to customer, but was popping when played at home. Since the client lives in the KC area, we pointed him to Midwest, where Mike there replaced a tube socket and was able to fix it.