Question about Washburn Amplifiers: 25 WATT Guitar Amplifier - Bad Dog - BD25R Car Audio Amplifier

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My paeveybandit 112 is buzing when i turn it up

Hi i have a peavey bandit112 80 watt i love this amp but when when i turn it up it starts to buzz but when i give it a thump on the right hand side the buzzing stops please can enyone help thanks john

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  • wesean44 May 17, 2009

    ok thanks a lot im goning to try that illkeep you posted weesean

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Check the power supply area for bad connections especially near the large capacitors. If one or more of those are disconnected, the DC voltage will have some noisy AC on it that will sound like a buzz.

Keep us posted.
Dan

Posted on May 15, 2009

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Hi. I would suggest there was a dry joint in the power supply section or on the 'earth' side of the input jack socket. If you know about electronics this could easily be fixed. Make sure the amp is switched off and unplugged from the power first. You would have to take the chassis out of the cabinet and gain access to the under side (solder side) of the PCBs. You can then check for dry solder joints or even cracked printed circuit. These are very common faults. If you need to know what dry joints look like then go to about-guitar-amps.com where you will find some useful photos that will help you out.
Good luck

David
Test Electronic Components

Posted on Jun 15, 2009

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