I have had the TH-58PX60U 58" 720p plasma since June.
It gets light use, probably less than 10 hours per week on average.
Last night, about 30 minutes after turning it on, watching cable via the built-in tuner, a large black square appeared in the lower-left of the screen. I would say it was roughly 1/4 of the screen area. When I changed channels, the black section would momentarily appear with static and then go to black. I tried the HDMI port and it exhibited the same problem.
I turned it off and on several times and the black square remained. I switched it off, returned about 30 minutes later and the problem was gone. I left the set on for a couple of hours and it did not return. I turned the set on again today and no problem.
So...does anybody out there know anything about this? Could it have been a firmware problem that cleared itself or is it indicative of a hardware problem that will return?
Should I call for service? Run the set as much as I can before the warranty runs out and see if it happens again? Buy an extended warranty? We are having a severe cold snap here (-10 to -15) so could it have been a temporary power quality issue?
I have both the 42" and 58" version of the 2006 plasma and this is the first glitch I've seen in either of them.
Any ideas? Thanks in advance.