Help... I have just noticed that on my KV28FX66 a light "line" has appeared on the bottom right hand side of the screen. This wasn't there when I first got it (only two weeks old). The "line" is about half an inch wide at the bottom of the screen, tapering off to nothing from half way up - it's curved. What is this??? I have just been watching Jason Bourne, could it be the speakers from my DAV? I need help urgently please.... What can I do?