I've never let a set of tubes get to that point, but I'm inclined to agree with pstring. Even if this is not what's causing the problem, a visit to your local tech is more likely to clear it up than trying to troubleshoot it over the net. This kind of thing needs hands-on examination.
P.S. I'm taking my G-K in for service. Now that I think about it, I'm annoyed at not having it available for use. Its not my first-choice amp, (not while I have 2 Ampeg tube amps to choose from!), but its kind of stupid to have gear collecting dust because "it needs a little work". :rolleyes:
[Edited by Lordathestrings on 08-05-2002 at 12:32 PM]