Originally Posted by beans-on-toast
Fortunately on most Ampeg amps, including the VT-22, pin-1 of the power tubes is left unused. Always good to check first because you never know if someone modded the amp and decided to use that pin.
Like my B-12XTC? Nothing like some B+ to wake you up.
From what I've read on other sites, before I try 6550 I might want to change the screen resistors from 470 ohm 1w to 1k 5w and change R50 to 82k. Seeing as how I'm not a total noob to circuit boards and soldering, I might consider doing this one on my own. It wouldn't be totally out of my league but it would definitely be a learning experience. I know enough to be safe and pass it off to a tech if I get in over my head. That's pretty important IMO. Thoughts?