Does the amp work- play music?
If not, most likely a tube shorted and took out a big resistor pack located under the amp across the big power caps. It is two large ceramic resistors glued together. They work like a fuse when a tube grid shorts. If the amp is playing music, I have not a clue.
If not, most likely a tube shorted and took out a big resistor pack located under the amp across the big power caps. It is two large ceramic resistors glued together. They work like a fuse when a tube grid shorts. If the amp is playing music, I have not a clue.