My PSW111 Subwoofer has started making a "clicking" or "ticking" noise. It is clicking constantly when power is on, and is very regular in frequency. It sounds like something electrical is being switched on/off at a precise rate. I have disconnected the inputs and tried all of the power options (Auto/On/Standby) and it continues until I unplug the AC power. I moved the Subwoofer and plugged it into a different outlet on a different circuit and it still clicks.
Help! This is EXTREMELY annoying and this is not a very old subwoofer, I do not want to purchase a new one.