I have a polk psw 120 that i notice had stopped working. the green light won't come on. I took off the screws, removed the panel and found a fuse. the fuse does not look blown, however when i put foil around the fuse to test, the light does come on but the subwoofer makes a squeeling sound.
i let that continue only a few seconds.
I would like to try a new fuse first, where would one find such a fuse and what size is it. it is very hard to read.
Secondly, could that howling be a bad capacitor and are replacements available. its a great little sub and would be a shame to not be able to continue to use.