Murray has a Sony XBR 930D 4K TV, and it has horizontal lines across the bottom of the screen. Then it looks like it has a double image after awhile. Leo says it sounds like a hardware failure. Scott says that it sounds like LCDs are stuck open, or that the edge backlighting on the 930 are running a muck. Bottom line, it's broken. He may be able to have it repaired under warranty since it's under 2 years old. But if not, it'll likely cost more to fix it than buying a new TV.