Hello,
One of my terminals was loose on my battery and was causing the car to want to die when starting. Sometimes it would start, other not. Figured that out and tightened up the terminal screw, all is good in that realm. Now, my radio display is dead, nothing when I turn the car on. I have powered the radio up and can hear it but can’t see anything on the display and it does not come on for the backup camera either.
I would assume I have blown a fuse but can’t figure out which one coordinates with the display itself and not the radio.

 

Since you had a loose terminal on the battery, I would suggest changing the battery. With the loose terminal, it was not getting the proper charge after start and over time damaging the cells in the battery.

A bad battery will still start the vehicle but cause many electrical and drive-ability issues in modern computer laden vehicles.

Attached is the troubleshooting for your issue. The first step is to look at your battery condition. If that is your original battery, I would suggest changing it and look at terminals for corrosion.

The fuse is at the under hood fuse panel 15 Amp Position A6. If this fuse was blown, you will have no audio at all.

Hope this helps.