Hi, I have a 32 inch RCA regular picture tube TV I bought in 2000. I get no picture from any input (S-Video, A/V, Coax), but I get sound from all of them. The on screen menus still work. I also get the unusable signal message if the S-Video or A/V connections are unplugged. Does anyone have any idea how to fix this, or if it would be easily fixable for a repair shop.