A couple of weeks ago, by Toshiba 40H80 mysteriously turned itself off, then in a couple of seconds it turned itself back on again. This is very similar to the to the "Power Reset" problem that others have experienced; BUT my TV had a 1 inch black bar, about 3 from the botton of the screen in Full mode, and other little back lines about 1/8 inch high and 3 inches long around other parts of the screen. So I take my TV to the authorized services center, and they tell me that I need the main board replaced and it'll be about $700. Is this price normal? Has anyone else experienced a problem like this? Thanks, Brian G.