Screen on stereo fusey screen when reversing

[Pauldwest]

Hi when I go into reverse my reverse camera screen has no picture. Just lines down screen. My screen is fine for stereo and sat nav. I have a CRV 2007. 
has this happened to anyone else so I can get an idea to fix please? Many thanks Paul

[Trevor]

Sounds more like the camera has gone faulty....check wiring from camera through tailgate trunking for damaged wires