problem with rear dvd monitors

[red99ws6]

I just bought a 2003 Z71 Tahoe with a DVD player in the console and monitors in the headrests. It has a remote for the DVD player and one for each monitor. The problem is that you can play a DVD and the screens power up but get no picture. You can hear the movie playing on the headphones but no picture. It is a one wire hookup. Thanks in advance for any help. My 2 year old is the one that is really concerned about them.

 

[ebxgsxr]

have you checked to make sure your video wire has a good connection?