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Screaming crackling noise when very hot

When the amp has been used for a few hours it starts makeing a screaming crackling noise but still works, even with all the volumes turn off, it still makes the noise, could this be a valve? if so how do i tell which one.

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Crakling sound is a symptom of loose or cold solder in amplifier section where the STK IC or Darlington transistor is located .You better re solder all parts joints there in order the crackling sound is gone.

Hope it may help you;

Regards;
VOTIT
DON'T FORGET TO RATE;

Posted on Jan 08, 2009

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