I have a Pioneer PDP-V402 40" plasma tv monitor that has four horizontal lines running across the screen. The first is about 5" down from the top and appears to be 4 lines(pixels?) wide. the other three are spaced out approx 2" lower, 4" lower and 10" lower than the first line. These are thinner lines(approx 1 to 2 lines(pixels?) wide. Is this something that can be repaired? The lines are totally black(no power) just like it is when the screen is powered off. Any insight would be appreciated. Thanks.