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Humming volume knob- help please...

Spectrum77

Super Member
Hello again... virtual service call, please! Touching the volume knob of the SPEC 3 control amp (connected to the M-25 power amp) produces a hum. The hum only occurs with the volume knob- touching any other part of the SPEC 3 or other components makes no hum. Remove and DeOxit? Any other ideas?
 
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Spec. Check continuity of the pot body and pot shaft to chassis. Loosen the volume pot where it's mounted and tighten it back up. J
 
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