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Tube amp noise at start up
I bought a Fender Tweed Blues Junior IV Ltd Edition brand new a few years ago. Never left the house and rarely played.
Recently fired it up and there was a lot of crackle, then verged on feedback, then went quiet and played normally.
I'm cycling it a few times, letting it cool, the restarting. Can I expect the crackling to diminish with more frequent use?
It is very quiet (as to extraneous noise) and sounds great as soon as the start up trauma passes.
Per suggestions, I have carefully pulled out & reinstalled each tube & I have run all the knobs back & forth multiple times.
More detail. After about 3 - 4 seconds of crackle, a feedback loop starts and crescendos in another 5-10 seconds, then quiet and the amp works normally with no background noise. Any idea on the feedback? I've made sure I had the amp freestanding and not backed up against a wall or corner.
All the above happens with ALL the knobs at usual settings (mid range) OR zero'd out at turn on.
Last edited by kydave19; 03-06-2024 at 10:55 AM.
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