Sony SA-WM250 Subwoofer "sub plays constant bass" Questions

sub, take the screws out and remove the back to inspect the circuit board. A clean solder joint is pointed and shiny, with the solder evenly distributed in the hole. Also check to see if any plugs are

...constant loud buzzing when I turn my subwoofer on (regardless of whether there is anything playing). Any thoughts on how to fix it? Generally, a buzz from your sound equipment indicates some sort of ...