We bought a Bush HDMI 32in Television Model No. LCD32TFO16HD in ~Tesco's Waterford in 2008 and for the past five or six months we have a black shadow on the screen from the top of the screen down to the middle of the screen and seem to travelling down the screen. It's very obvious when the back ground is lighter. Can you tell us what the cause of this is and if anything can be done about it. We have always bought Bush Appliances and are so disappointed in the Television.