Greenish rectangle on Panasonic Viera plasma TV
We have a 58" Panasonic Viera plasma TV and in the first year it developed an off color square somewhere on the screen. This was in 2008 and it was still under warrantee, Best Buy fixed it for free. Now the TV is out of warrantee and has developed another light green rectangle about 3" wide and 12" long starting at the top of the screen near the upper right corner.
Is there anything I can do to fix this myself or do I have to pay to $150 for someone just to come look at it?