Trying to make a portable Raspberry Pi. I picked up two 3.5" vehicle backup screens from amazon using the link Ben Heck provides on the forum. Both screens turn on but have the same issue. I am applying 12v dc power, and composite video. when Ihook it up to my NES(also trying to make a portable NES) the screen displays the video but the image continually scrolls up on the screen. So then I hooked it up to my PS One and it displays the Sony image and the memory card and cd select screens just fine but when i start any game the screen starts scrolling up or down continuosly. Both displays have the same issue. Any ideas or help would be greatly appreciated.
