You should also check the 1 Ohm resistors R37/R38 AND R43/R44 (in series with the anodes of the output tubes. (Sometimes they look ok from general inspection, but can be defective.)
Also check the 100 Ohm resistors R39/R40 AND R45/R46 (same comment as above)
I keep a bunch of these resistors (can order from ARC). These are the first to go if there is an arching problem.
Also check the 100 Ohm resistors R39/R40 AND R45/R46 (same comment as above)
I keep a bunch of these resistors (can order from ARC). These are the first to go if there is an arching problem.