Mitsubishi VS-5061 has 13-14 curbed fine horizontal lines

[cbivolan]

With no input the screen is blue with 13-14 horizontal curbed white lines. With input like cable TV, VCR, or DVD, the picture is kind of greenish, with the same lines as w/o input. Everything else is working, including all adjustments.

Could you please help with advice?

[jts1957]

If they are "retrace lines" - Turn down the screen (G2) controls settings.