- Mar 26, 2010
- Reaction score
A friend of mine asked me to look at his Hot Rod DeVille. Kept redplating on him. He broke a tube, which popped the fuse. When he put new tubes in, now it redplates. Started looking at it yesterday. Run away bias. Had to do a double take to make sure it wasnt a DSL..lol. Sure enough, at pin 5 the bias voltage slowly climbs up to zero from -54 or so. Anybody got any ideas?