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Crate amp hums when it is turned but can work at times

Hey my crate gx 130c amp will hum after sitting dormant for a while. The overdrive light goes off and there is no way to switch it from clean back. you can fix the problem by gently but solidly hitting the top of the amp head. this also fixes the overdrive problem. it will pop and go back to playing great. but the amp will hum next time you cut it on or sometimes if it vibrates to much. i need help soon because i have band practice and im no good without a strong amp. does anyone have a longer lasting solution to fix the buzzing or possibly a perminent fix???? thanks to anyone willing to help!

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Has th amp got a valve if so the valve may need replacing or might need reseating..

Posted on Jul 31, 2009

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