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Amp/sub scratching sound

204 Views 1 Reply 1 Participant Last post by  bakwards10
I'm pretty sure my amp may need some repair but if anyone had any other ideas I could try I thought I would attempt myself at first. Dayton 500w plate sub amp is making a scratching electrical noise via sub. Occurs with different sub hooked up to it. Current sub hooked to different amp doesnt make noise. Only occurs when amp is turned on and not in standby. I've tried different outlets, different cables, and a converter plug to remove the ground. My suspicion is either the power cable, don't have another to test right now, or something internal on the amp itself. Opening up the amp doesn't reveal anything super obvious at least to me. When noise started nothing had been altered in any way with the sub. Is power cable likely?
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Realized my tv has a power cord that works. No change. Also amp is probably about 10 years old.
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