Tube Amplifier Debugging Page
I've used this page a number of times to fix an amp. It is one of the most instructive and useful tube amp repair guides on the net. Tube Amplifier Debugging Page
I cleaned up my tab for Sonny Boy's Help Me and made it into a short book. There's a Kindle version for 99 cents, and if you buy the paperback you get the Kindle free.
Playing "Help-Me" In the Style of Sonny Boy Williamson II: A step by step, note for note analysis of some of Sonny Boy's Signature Riffs