Used amp from guitar center won't turn on. Any ideas what could be wrong, maybe “good” condition means broken. Peavy trans tube special 212. : r/GuitarAmps
Is My Guitar Amp Broken? – FuelRocks
Common Tube Amp Malfunctions: How to accurately diagnose what is wrong with your vintage amplifier. — Tropical Fish
Repairing the audio amplifier - iFixit Repair Guide
Let's Fix a Noisy Broken FenderJ.A.M. Guitar Amplifier from the 90's - YouTube