Can anyone help. I have a fairly old 28inch Toshiba Widescreen TV about 2 years old. Over the past few weeks i have noticed curved lines appearing when watching TV. IE if watching something with a door in the picture the door is not straight, the door or lines curve at the top and bottom of the screen. I think the technical term is the geometory is out. Any ideas how i can change this. I know how to get into the service mode but i do not know what all the settings mean. P.S i have made a note of what the original settings are.