When I used to get coil whine in TV sets, I used to use a bit of glue (usually nail varnish - not my own !) on the coil, if the windings were visible. Sometimes this would solve the problem, other times the problem was cured by replacing the coil with a new one.
If designed and manufactured correctly, no coil should whine.
TVs whine due to the backlights, my mothers is horrible for it! I sent a few TVs back due to this but the TV i have now is totally silent, its a Samsung LED and my mothers is a Samsung Plasma. If i mute her TV the sound is really quite loud!
I had problems with my Virgin superhub plug whining too got a replacement that did the same and asked for a better quality one, they sent a square plug, the old one was curved, the square one was totally silent and still is!
It really is down to components and there should be some kinda rule in place before they are allowed to ship these!
Fair enough if they were £50 each but £300 for a noisy mess? noway!
I RMA'd mine yesterday, assume I will get another one that sounds like a bee?

