Interface screen is blank

Hello,

Today i tried too install a brand new interface.
I noticed that the screen was blank on booting, but i thought is was normal during setup.

some light lit up and i was able too setup the wifi.
But after this the screen didn't change after a reboot.

The interface seems to be working, because i can move my workbee with the interface buttons.
Is there something i can do or is de screen defect?

Kind regards,

Marco

 

Thank you Peter, i will do that.