Here's a '73 Twin Reverb we bought to restore to glory.
It had a ton of issues that we addressed: - cut off power cord - mismatched and missing tubes (power and preamp) - shredded pots - blown speakers - out of tolerance grid resistors.
Watch on YouTube for time stamps. Enjoy!
I'm a country blues artist, multi-instrumentalist, and pro audio repair technician. I am always curious - but never nosy.