I hope this is in the right forum, please move if it's not! - - - Anyway, I've just noticed there is a strange 'mountain-like shape/outline' on my tele. I've noticed this while watching it that the picture on the tele is fine, but there is a distinct outline at the bottom of the screen which looks like a mountain type shape. It's filled in so it's not just a random line across, it looks really weird. I've searched using my trusty friend Google but unfortunately this time around it could yield any relevant websites. Any help as to what this may be and what may have caused it? Any A/V experts around that could help?