Television and Home Theater

I bought this RCA TV model # D52W20 in 2003. It works fine until a month ago. Closed Caption in All channel above channel 24 (24 to 99) disappeared. I used Charter Cable which is hook to this TV.

TV Service man came and analysis this problem. He blamed on Cable Company which caused problem with signal strength. I do not believe that cable cause this problem. I tried other TVs (RCA F19426 which is manufactured in 2002, and Magnavox 15MF400T/37 which is newer) they are working great at any channels from 2 to 99.

Hopefully someone can help me here since Sears doesn't seem to even want to talk about it without coming out here and charging me $100 just to look at it. But a couple days ago, my 55" Sony KP-53V80 tv starting dropping in the red. After 5-10 minutes of it warming up, the red would dip about an inch on the upper left and the lower right parts of the screen. The center of the tv stayed in focus perfectly. It looks like a 3D movie gone bad! Can anyone tell me if this is a costly part that needs to be done or is it a simple adjustment? I just bought a house so money is tight!!

Hello everyone,