@Black-Square Thanks for the reply
I have tried copying before, where it did help, maybe I even reinstalled MSFS2024, but after I did something(sadly, I can't remember exactly what), the instruments worked again.
Unfortunately it does not help now, I have tried to copy Asobo King Air files, BSQ King Air files and PMS50 files, but to no help.
I have also tried to remove the PMS50 (I could still get the 750 bezel to be shown in the cockpit, but I guess it is the design, even if you have not installed a 750?)
I even deleted MSFS2024 and reinstalled it again, but no luck.
The 750 works in the pop out version, I have that on a separate screen, but my biggest problem is that I sometime need to repair the engines (I know, my bad :-)), and I can't do that because I can't operate the weather radar.
Please note that the radios and the Reg-no are also blanked, if I look at the plane from the outside, the Reg-no is also missing there.
I use MSFS2024 on 3 computers, and they all suddently have the problem, so it could maybe be something related to the sync between the 3 computers?
BTW, and maybe related: the plane do not remember my GPS setup anymore, it (sort of) used to do that, but now I have to select GPS setup every time.
Thanks for using your time to help, I am defenitly also giving a +1 to the wishes of a 2024 version of the King Air