[ben_att]

Hi all,
I have a problem that's doing my head in at the moment. I've got a chevin A3000 running two seperate subs of the same type connected through a unbalanced to balanced converter from a bass processor from a rotel preamp. It works well until I turn on my LG Plasma, as soon as I turn it on, there's a small pop from the subs, then once the screen turns on the sound stops from the subs and I get a massive varying buzzing noise, it's extremely loud and harsh popping sounds and then once turning off the tv, it goes quiet and before the sound comes back I have to unplug the signal leads and back in again and it's back to normal. I have tried turning on the TV with nothing whatsoever plugged in other than the power lead, even ran an extension cord to another room of the house and it still does it. If I move the amp away from the TV to another room, it still does it except the buzzing isn't as loud.
Has anyone ever experienced a weird fault like this before?
Any advice appreciated.

Cheers