try different sources, OTA tuner, DVD Player or VCR, Does these line appear on every video mode? check you power supply is there any electrical interference?
i would connect through a good Surge protector.
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Panasonic 50PX80U/Pioneer BDP-51FD /Toshiba HD A1/Tivo HD
SAMSUNG LNT-4661F/ Pioneer BDP-51FD/Dell XPS, Nvidia 9500 GT
SONY BRAVIA 40V2500/40 GB PS3, WII, Intel Core 2 Duo with Nvidia 6800
Yamaha RXV1700
Def. Tech. Mythos III, V & Gems,
Super Cube III
Harmony Remote One
Power Conditioner: Belkin PF40
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