it sounds like your buffer has blown. But it mite just be loose wireing unplug the TV just look to see if you can see a wirer and reconnect it, if not the buffer goes down the side and is oblong shape it has about eight chips on it look at them they should be smooth, but one has blown it is pitted, you would have to get a replasement so take down any numbers and look on internet.
galfear
October 2009