I had a similar situation when I moved - the TV was propped against a drawer, and the weight of the TV had been pushing part of the screen against the handle for a couple of hours. Unfortunately I then had vertical & horizontal lines across the screen.
I looked into it and as much as it can be repaired, it's expensive. More cost effective to buy a new TV unfortunately. (I think I was quoted around $800CAD consistently, even the components required were $500CAD+ when I looked into repairing it myself).