Hi,

I have been using CyberAudio's 3-piece computer speaker systems for
over a year and have never encountered any problems so far until half
an hour ago when the sub woofer suddenly started humming very loudly.
The noise has not stopped yet and will only stop if I pull out the
power cord. Whenver the power cord is pulled in, the hum is here. Any
help would be greatly appreciated. Thanks!

Best,

Chin-Yunn