Blue vertical lines in HD mode w/ 921

[Mr5150]

During very dark screens, even during the display setting menu, I get about 7 blue vertical lines (fairly dim) in 1080i mode w/ component hookup going through a Denon 3802. I'm going to try running direct to see what happens. Any input?
Thanks. 5150

[Cyclone]

Keep trouble shooting and report back with more data.

[Mr5150]

I ran it direct, it still does it. 6000 was fine but I'll double check it also. They are 7 sets of double lines. They modulate towards and away from each other...strange. When I pause, they pause. No more modulation.