I don't know how it happened, but my RPTV has a little red spot in the middle of the screen. I have no idea where it came from. I did the manual focus on my Panny yesterday, and it looks like it happened after that--but what could it possibly be? I never touched the screen from the inside. Something on the back of the screen? Something on the front of the screen? It is less than 1/16" of an inch in diameter, but it is red and right in the middle, so it is driving me crazy. I've tried gentle cleaners on the front, no go. Any good cleaners that may be used on the screen?