scrambled screenMy TV will operate fine for some time afterwhich the screen will turn into checker board like flickering. It never happens immediately when I turn on TV but after a while (sometimes after a few minutes and other times after a few hours). The sound on the program is not affected and it happens regardless of the source of programming. If I turn TV off and then on, the picture is fine but it will soon revert to this problem. Anyone experienced a similar problem? Any guesses as to what is causing this problem?
