Buzzing sound thru speakers on bose companion 3

SOURCE: bose companion speaker stopped working!?

What happened to you is probably mere coincidence with your cousin's use of the headphones and this is throwing you off. I own the Bose Companions also and they stopped working as well. However, I traced the problem to the "wall wart" power supply. Not sure why but Bose is now using an interchangable plug on them. If you look at the power supply you will see a "PUSH" button. If you depress it the plug can slide out. When it is slid back in and locked in place the connection between the plug plate and the power supply is not a good one. Try fiddling with it. But even if the connection is not the culprit, something in the power supply is. I swapped another power supply with the same connector and spec's ( amps must be the same ) from another item and the speakers worked perfectly.

SOURCE: Bose 3 Companion Voltage

http://laptopsforless.stores.yahoo.net/volconforeur.html?wwparam=1239619507

Please chk the above Convertor it will sove your problem

SOURCE: Does the Bose companion 3 have an internal fuse?

Yes. The companion 3 system can be repaired for $75. Call Bose at 800-367-4008. They will also give you a new 1 year warranty.

SOURCE: Bose desktop speakers stopped working suddenly

Make sure that the power is plugged into both the wall or strip and the back of the speaker.

SOURCE: Bose Companion 3 series II speakers aren't producing sound (imac)

from what I've read, the imac has a 3.5mm (.138) jack while the Bose jack is 1/8 (.125). very small difference in size (.013), but enough to cause problems.