Unsolved problem with Evans fet500amp

Willie Sims · From: PADUCAH, KY, USA

Hi posted a subject a bout speaker replacement in a Evans amp I would like some advice as to what happened to this Amp when turning the amp on after being in a hot garage for a week it started squealing and Moterboating the master and volume turned down all the way down. Turned amp-off then back on used it for three hours work perfectly later I removed all circuit board did not find anything wrong did not check power transistors . amp has been working fine ever since this happened1 no one seems to know what happened. To this amp my theory is that when the air-conditioning was turned on it created condensation in the amp appreciate any ideas you can come up with thanks to all

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