02-15-2019, 11:02 AM
Ummm, how about injecting signal into pin 4 of 42? If that isn't passing signal problem definitely in output section.
Are you sure the output transformer primary(blue, 500 ohm) is connected to plate and not one of other windings?
Are you sure the output transformer primary(blue, 500 ohm) is connected to plate and not one of other windings?
Tom