Cruis'n World Help!!!

[Cruisn World]

Hello,
I have two Cruis'n World Arcade Cabinets. One starts up, no problem however after some time, it reboots back to CPU screen. Not sure what I need to do to fix this. The other cabinet plays blind. Not sure if I can fix the screen to show the picture.  I am a noob and need help figuring this out, so please respond in lamens terms. I have included a photo of the back of the cabinet should you need it.Thanks!

[baritonomarchetto]

The reboot has a whole lot of possible causes. I would check the power supply first, in particolar the +5V DC line and eventually rebuild it.
About the cab running blind: do you hear game's music/effects? If yes, the game is running and you should candidate the monitor as cause of the issue. To check if your monitor is working, rise the SCREEN potentiometer on the monitor chassis and look at the CRT. If the screen is still dead/black, you likely have a flyback issue. If the monitor is grey/white, well that's your RASTER (which is good). This means your high voltage is there and your monitor likely working. You would be then allowed to candidate video signals as possible cause of the issue (cables/connectors and back to the game PCB).