Hi, I came across this as I bought one. Sorry for posting in English, I used Google translate to find this site. If you still have these units you might find it useful that they need 28V DC but quite a lot of current. They take over 5 amps; mine the fan spins and it attempts to light the display but then shuts down as my PSU can't supply the current they need. They do seem to take an analog video signal either component video or sync on green as they have the coax connectors and analog video amplifier chips on the processor card. They have a resolution of 768x768 pixels but signal frequency and type is unknown. They are based on the displays used in the Airbus A330 and A340 however the pinouts and processor card is different. Power pinout is here https://www.dropbox.com/s/qycidtc8aomlw50/Nimrod%20LCD%20power%20connections.jpg?dl=0
I've sent mine back to the seller for a replacement as it was water damaged. I'd love to know how to get it working - they are very difficult to reverse engineer due to how they are constructed and the chips are mainly custom with no information.