I have a Panasonic TH-50PV500A 50" Plasma TV that has just started having rolling blue 'staticish' horizontal lines going from the top to the bottom. When in the PIP mode, the 2nd picture does not have the rolling lines?? I found a Youtube video showing the exact same problem as ours, so I thought I would include the link - http://www.youtube.com/watch?v=eTfduCtARAs.