Well, I took the thing home
Things I noticed upon initial troubleshooting:
1. Projector is showing a "No Signal" (in Japanese) message.
2. I disconnected the video cable from the Game PC and connected that to a laptop, still "No Signal"
3. Projector shows "HDMI" Input when starting up (then No Signal), I am wondering if the wrong input is selected (I would assume it can auto detect input, but maybe not). The video cable that goes into the game board is VGA, so either the wrong input is set or it goes into the HDMI port of the projector with a converter somewhere. Either way, it is strange and worth investigating.
4. Does not seem to be playing blind, there is no sound, I tried adding credits with the service buttons, there is no sound whatsoever.
5. USB Dongle was connected but by reading the manual it seems to be in the wrong USB port, I doubt that has anything to do with the lack of video problem (manual says it should display a dongle error message
6. Game PC makes several beeps at boot.
7. Video signal connection (DVI) do not match 100% what I see in the manual, there is a VGA cable with a VGA to DVI converter that I assume was connected to an additional Projector input for some reason, I have to take a closer look, follow the wires and check which projector inputs are being used
8. I have not started troubleshooting the PC, I would like to get a video signal first if possible, I assume an external signal can be connected (eg: from a Laptop), but I cannot be sure.
There's a lot of things to try, I will dive in this weekend (hopefully) and see if I can figure out more.
One more note, this machine is coming out of an active Arcade place, with many machines classic and new, they don't seem to have the best technicians, but I'm pretty sure they did try to troubleshoot this machine before deciding to sell it, so I don't expect this to be as simple as an unplugged wire somewhere, but here we go.
Any advice or comments in general are quite welcome.
Here's more pictures and a video
View: https://youtube.com/shorts/pnBJDpAKyMA


