I'm sorry to hear that you're having this issue.

Unfortunately, it's difficult to diagnose a television without being able to actually see the problem or see the hardware. If I had to guess, it sounds like an electronics issue rather than the panel itself, but again, that's just a guess.

The best suggestion is to have a technician come out and diagnose the problem. You can call 800-SAMSUNG, or fill out an online service request form here: