Black screen of death

[Mrkelly]

Wife had a dead battery out of the blue. No issues prior, just dead in a parking lot one day.

I jumped it, started fine.

 

Then noticed the black screen of death. Radio plays, you can skip through to stations using the manual buttons on the dash. Same with the heat. Just the screen was black. 

 

Wife wanted a new battery anyway, replace it. No change to the radio of course. I tried pulling fuse 29 for 15 min. didn't help.

 

Got a new screen and APIM (The sync2 to sunc3 upgrade kit) didn't help.

 

What else could it be. Screen itself is black even after replacement. I know it's getting power since the radio still makes sound.