I have a AVIC-D2 that had a detached ribbon cable.

 

I re-attached it and got lines all across the screen at first, and now its just blank.

 

I checked the cable for rips/tears/contacts missing and the cable seems fine.

 

The open/angle/volume buttons all work and it plays a CD when inserted but there is nothing on the screen.

 

Is there a way to output what the unit is doing to a television to see what its doing for troubleshooting purposes?

 

Suggestions?