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'82 JCM 800 4104 Service and Mods
#5
Further update: I can reproduce the symptoms mentioned, but only soon after power-on. Moving the master volume around might affect it, but I couldn't tell. So as a guess, it's heat-related and goes away after something warms up, and is somewhere in the first gain stage. Not sure if the master volume is involved yet or not. Thinking a can of freeze spray would be the next step, to see if I can force the issue some time after power-on.
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'82 JCM 800 4104 Service and Mods - by physics - 10-18-2024, 03:18 AM
RE: '82 JCM 800 4104 Service and Mods - by physics - 10-19-2024, 05:48 PM

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