Display black

Hey. The Range L322 04 monitor / display went black when I replaced the battery.
The Navigation Unit on the back lights up red Led-power.
Cleaning the wires won't help.
Is the display / monitor broken?
The display / monitor only comes with the backlight and the orange LED lights up.
Music is heard but the screen is black .

Had that on mine a couple of times but usualy comes back on after ignition reset. If you have voice commands you could try pressing the voice button and saying "display on" and see if that works.

No working
https://aijaa.com/uC63fh

sorry about that, that was all I could suggest.