SYMPTOM: Game would not boot, black screen.
SOLUTION: I got this PCB a bit ago and I found it had a couple of problems that were pretty obvious. It was missing an EPROM at location U89. In the place of an EPROM was a socket extender that had ruined the socket. I also found a strange EPROM marked as a "Kombo Pack" The back of the board was scratched up, but a beep test confirmed all was okay.
A good place to start was to return this to a factory code base. I quickly found out it was rev.3 of the software and I found some blank EPROMS to program. I also fitted a replacement socket for the trashed U89. At boot, I was greeted by a working game!
I have no sound card, or the JAMMA+ harness, but it is somewhat playable.
The only unresolved issue I can see is some static around the first level crowd of monks. No biggie.
SOLUTION: I got this PCB a bit ago and I found it had a couple of problems that were pretty obvious. It was missing an EPROM at location U89. In the place of an EPROM was a socket extender that had ruined the socket. I also found a strange EPROM marked as a "Kombo Pack" The back of the board was scratched up, but a beep test confirmed all was okay.
A good place to start was to return this to a factory code base. I quickly found out it was rev.3 of the software and I found some blank EPROMS to program. I also fitted a replacement socket for the trashed U89. At boot, I was greeted by a working game!
I have no sound card, or the JAMMA+ harness, but it is somewhat playable.
The only unresolved issue I can see is some static around the first level crowd of monks. No biggie.
