[MrE]

Larry,

Does your monitor have another connection for video input? It may be that Video 1 is bad but Video 2 is still good.

Mine was bad when I bought the coach, and I replaced it with a wired unit that I had to string the cable for. The one feature about it that I really like is it has a microphone in the camera so anyone standing in the back can communicate with the driver without shouting or having to open windows.

If I had to do it again, I probably would have opted for a unit with side view cameras also.