Ringing noise We can play DVDs without a problem. However, when we play the TV through the system, it emits a loud ringing noise.

high voltage transformer

It is a medical condition called "tinnitus". It can be caused by listening to loud music or noises, but it can just happen without obvious cause. Don't wear headphones loud and don't go to loud concerts, go to an ear specialist and have it checked out to rule out any pathology. Often it comes and goes by itself, but if it has no pathalogical reason then there is no cure other than masking it with other noise like the tv or radio. BTA About tinnitus

on the a/c adapter, (red yellow and white.. unplug your yellow connector and if that doesn't fix it, then plug it back in and unplug the white one.

Hi
from here in the middle of the night
do you still have the manual?
if you do consult it
if you don´t look out for all conections,scart and what have you???????????????
Good luck

kolla bolla

do you have a microphone enabled? If so, you may have to move its location away from the headphones.

It ur flyback transformer,the big black block of plastic with a red wire solder to a board.

you need to bring the head unit and the bassbox back to bose for service or repair, it is aproblem with the powering up of the amp module, and could be caused by the control circuit in the haed unit or a problem in the amp, which has a slow ramp function to prevent louds bangs and pos at start up. in that case i would guess the latter is faulty, i would guess it is also a warranty repair for bose too.

Depending on the age of the system, replace or ignore.
Its your DVD drive, unfortunatly most drives are noisy -FACT- so sometimes you have to just live with it- check the back ,if manfactured in 2005 ( a lot of bad drives from this year) might be worth ringing microsoft to see if an exchange is possible.-
But if its not showing any loss of play/loading or scratching the discs - or showing error- please place disc in a xbox 360 console...You may just have to put up with it.

solder around pins on flyback transformer,see if this will solve your problem.some flybacks will make this sound, like a ringing noise.

it is due to no signal from the source.