I recapped the amp with a kit from Fliptops. I believe all the caps are installed correctly, but anything's possible. The problem WAS that the last 2 tubes were burning super hot. I replaced the diodes. Tested all tubes. When I try to turn the standby switch the R52 resistor burnt up. I've replaced it and checked the D11-14 diodes. I've gone thru the board and tested every resistor. Any help greatly appreciated.