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Polk plate amp from psw-110 subwoofer - blown cap (Bellingham)
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It started having a buzzing sound whenever it was plugged in. Googling showed it's a straightforward capacitor replacement:
- https://forum.polkaudio.com/discussion/175654/polk-psw111-sub-woofer-heartbeat
- https://hesiod.blogspot.com/2016/01/how-to-fix-humming-on-polk-psw111.html?m=1
I just don't have time to mess around with it on the off chance it's something else so I replaced it completely.
Would be a great project for someone else who's competent in replacing capacitors