Question about Polk Audio PSW-303 Subwoofer

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My Polk PSW 303 subwoofer emits a hum when plugged in and powered off. When the unit is turned on the hum gets louder. At this point the unit is useless. Does anyone know what could be causing this?

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Hiya sounds alot like there is a power supply issue with the unit that will require repair for it to be doing off or on. Probably wont be to expensive, request a quote first to make sure viable.

Best of luck

Posted on Jul 16, 2009

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9AM-5:30PM EST Mon-Fri
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You probably turned on the amp at full tilt and that is the safety for you speaker check out an tv shop and see if they can get the info or order you a new board .You can order the schematics from a tv or electronic appliance place if you give them the info and do it yourself. Go to the store or website and check out what color of resistors they have or just order the board direct from Polk or an authorized dealer.

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