LCD box beside pitch-black tie across middle of blind?
Answers: You have any the LVDI (display driver) card gone sour on you, or the display itself.
Take the set in for service, if it is the signal board, it might simply be worth repair, if it's the display, you need to win another set.
The cost of a new display usually exceeds the cost of a strange set.
Sounds like peak burn. This can be caused by a similar picture being onscreen for long period of time over the lifetime of the TV. Sounds like widescreen movies (black band at top and bottom of the screen) has cause this. The LCD screen can be replaced but it's not cheap. You might be better stale getting a new set.
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