I have a 5E3 clone that has worked well for years, but now, I power it up, it plays for 30 seconds or so, then it gets fainter and fainter until there is no sound. I thought it might be a loose connection that was interrupting the circuit when it got hot enough, so I re-flowed every joint I could find, but of course the problem is still there. Now I'm thinking it is a component failure. Has anyone seen these symptoms before, or know what the problem might be?
Have you tried swapping in known-good tubes?
How old are the electrolytic capacitors?
"...pray do not imagine that those who make the noise are the only inhabitants of the field;
that, of course, they are many in number; or that, after all, they are other than the little,
shriveled, meagre, hopping, though loud and troublesome, insects of the hour."
-Edmund Burke
check the heaters (are all the filaments alight when it fades out?)
Do you have a standby switch modification? It might be useful to take some voltage measurements, after you rule out tube issues, of course.
Several guitars in different colors
Things to make them fuzzy
Things to make them louder
orange picks
I had a '66 VR do that once....it was the driver tube.
"My flesh and my heart fail...but God is the strength of my heart and my portion forever."
PS. 73:26
MY JAMS--
http://www.soundclick.com/bands/defa...&content=music
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