I purchased a Panasonic 50" LCD 4 months ago (caught it on sale). Just installed it in basement on weekend of memorial day. After the weekend TV was not watched again until June 4, 2008. Then on June 7, 2008 went cut the TV on and there was a black square with different color lines running through it. Panasonic refuses to accept it as a manufacturer problem and I'm stuck with a TV I can't watch. Does anyone know what could have caused the problem and what repair is necessary. The main question is will it be expensive to repair?