http://www.rca.com/customerservice/kbarticle/1,5192,CI700080-AN1503-KB921CE0C49C8E7430E0339DFEEACC7430,00.html
Quote:
Question: When I connect my computer to my high-resolution monitor, I get horizontal or diagonal lines on my TV screen.
Article #1503*
A. If horizontal or diagonal lines appear on your screen when it's connected to the computer, try synchronizing the display setting of your computer and monitor. The high-resolution monitor can display scan rates of:
* VGA: 640x480, 60/72Hz progressive
* S-VGA: 800x600, 60Hz progressive
The display properties for your computer must be set to one of these. Consult the owner's manual for your computer operating system on how to "boot " your system up into the "safe mode" and set monitor display for the desired mode (such as S-VGA 800x600 Progressive).
Just noticed that might not help...Maybe you can ask RCA people directly?