So I'm not familiar with these JJP games at all, and I'm working on a WoZ for someone else. It was brought to my place a few days ago and here is what it's doing.
My shop is protected with GFCI receptacles. When I plug the game in and turn it on it trips the GFCI receptacle immediately. So I ran a good heavy gauge extension cord to a circuit outside of the workshop and turned the game on.
I hear some fans turn on and the monitor says no input signal. That's it.
I opened up the large metal box in the bottom and found the reset switch. With the game on I push the reset switch and the fan on the processor runs, I hear hard drive noise, the backbox marquee light comes on, coin door slot lights come on and the monitor says no input signal.
After 10 seconds I hear the fans go off and the backbox marquee light goes off. Then the fans start again, marquee light comes on and it keeps repeating this on/off pattern.
If I turn the game off with the switch and turn it back on again I have to push the reset button to get the hard drive and processor fan to spin, but it won't boot.
That's where I'm at. Nothing on the screen other than the words no input signal and fans coming on and going off repeatedly.