Having problems with your Bose Companion 3 Series II Multimedia Speaker System (3-Piece) - Graphite/Silver ?

Loud hum when Bose Companion 3 Series II speakers are turned on.

\015 When I turn on my Bose Companion 3 Series II speakers I get a loud hum. I think it could be a wiring issue but someone else told me it could be the motherboard. I have all of the outside connections plugged in the right way and it doesn't look like any of the inside wires are frayed or cut so I can't figure out what it could be. Any help would be most appreciated!\015

Answers :

I had the same problem for many months. I asked a sound & video professional and he suggested I move the subwoofer away from any power source. I had the subwoofer next to my UPS. Once separated and moved all wiring away from the power supply (about 12") the low bass hum was practically gone.
Repair Help & Product Troubleshooting for Bose Companion 3 Series II Multimedia Speaker System (3-Piece) - Graphite/Silver

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