For reference, this is the Space Demon Cabaret that SRW sold years ago
https://forums.arcade-museum.com/threads/dedicated-nintendo-space-demon-cabaret-upstate-new-york.234480/
It was hard to get decent photos to see anything I am attaching what he shared. The game is playing blind and I can see that the sync cable is disconnected but I don't think that is the issue and sync is on the other cable as well.
There is a guy who took a leaf blower to his Area 51 site 4 and now the monitor doesn't work? I ran though a bunch of things with him via texts. Looks like the monitor is a K4700/U2000/U5000 based on the photos I saw.