I had a similar problem with my first Z1. If you don't have another video source, put in a dvd, play it and change your settings on the Z1 to mirror the dvd output. Hook up an RCA from the video out to the back up camera input. Then with ignition on and the car not running, e-brake on, shift the car into reverse. If you get a perfect image of the movie, it's not the Z1. But if the image is as bad as with the camera, then it is the Z1. I first thought it was my camera and after I recieved a replacement and took my truck apart, I still had the same issues, I was pretty pissed that I had a bad un