I own a 27" Panasonic analog TV, model # escapes me, purchased a year ago. As I was making an adjustment to the shelf where I keep the set, I put it on the floor, when I put it back and turned it on, the upper left hand corner of the screen was discolored, it's noticeable when the screen is blue because the "patch" appears pink/red. It was large at first but it got smaller by the hour and it eventually stopped shrinking. While it's small, it's not too small that you don't notice it. Is there some way of correcting this without having to pay a repairman? I didn't purchase an extended warranty because the set didn't cost too much.