InFocus ScreenPlay 5700 Multimedia Projector "gray horizontal lines" Questions

gray line in the middle of the screen horizontally about 10% of thscreen , let me know if you have an answer, thanks You have a bad connection between the main board and dmd, or between the dmd chip ...

...horizontal black lines that make it unwatchable. But within 2 minutes, it "warms up" and the lines disappear. I recently changed the lamp, since it had 2000 hours, and I hoped that the new lamp would ...