I have been given the challenge to fix the above old monochrome monitor, a Teleray model 7R made by Research inc, which is completely dead. It consists of a tube, CRT drive circuit board, PSU board and a big logic board (it displays only text, is not a 'picture' monitor). I have been unable to find any service information for it , even using web searches for the manufacturers. It seems to have a PSU fault, again each board is long obsolete without any info I can find on the web. Although I can do some fault finding, the PSU is switched mode and relies on feedback from the other boards to operate, and also needs to be loaded, so it's like finding the break in a contionuous circle. Added to that fact is that I live in Saudi Arabia and the monitor had been taken to a local repair shop so I can't even guarantee the components are the correct ones without service data. This monitor is part of a larger old test station and there are no compatible newer monitors due to the age/programming of the rest of the test station.
So if anyone knows of anywhere I could get such information, I would be very grateful.