Very similar to what happened to mine. I posted a video in my earlier thread that showed the right and left halves of the EMS bottom band swapped. The NAV ribbon also swapped sides. Since the main PFD element group goes black when "Menu" or "Display" buttons are selected, theres not much more I can do except try and go to EMS setup menu and try to swap everything back. But that doesn't fix the bigger problem for me.