loud humming from sw ur speakers

vader1979

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I talked to smalltownguy2 and he told me it is normal to have some humming from speakers. But when is it normal to something else causing noise? I recently replaced cooling fan with exact replica from radio shack....so now fan is ultra quiet. But now the humming from speakers is quite annoying. Can even hear it hum from 25 feet away. Advice? Remember...I am a self proclaimed idiot when it comes to the technical side of arcades...so please respond in layman's terms. Thanks!
 
That fan runs on AC, and it is in the vicinity of a lot of sound wiring. Did you remember to twist the wires leading to the fan together? (this is a low end means of shielding surrounding wires from AC noise). Also try reorienting some wires so the fan AC lines are not so close to the sound wires.
 
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