Sounds like you could have an internal connection that remains closed until the unit heats up and then something expands and opens the circuit. I had this happen to a Fender tube amp years ago and it took a year to troubleshoot the problem. Time to get out the plastic probe, schematic and meter to check for continuity problems when hot.
Fisher Tube Amp cutting out
I just acquired a Fisher X-101-B integrated tube amp that may have been sitting for some time. It will play for several minutes and than the sound will cut out to a whisper. Turning the unit off for a minute and than turning it back on allows it to reset it's self. It seems to be gaining some time on how long it will run, but still cuts out. All tube light up. Are the electrolitic cans in need of replacement, or will they settle back in given some time if brought on line slowly with a varistat. Or is there something else know to fail on unit of this age.
When it runs, it sounds fantastic! Thanks in advance.
Charlie
When it runs, it sounds fantastic! Thanks in advance.
Charlie
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