So here is my progress for the evening.
Removed the original Power supply. I found out that Galaxian, Pacman, and Ms Pacman(?) get their power directly from that one and the board converts it, hence no separate power supply board. Anyways, I removed it, and tried to remove all the dangling loose wires, and let me tell you something, its a mess on that power board. Look in the top right corner, and tell me what this does:
I am not an expert, but that doesn't look that safe to me.
However, I decided to just for the moment mount the PCB back into the cabinet.
I get it hanging there, and lol and behold, that connector doesn't fit! it is only an 18 Pin X 2 connector where as Galaxian and Galaga use 22 Pin X 2! I thought, "is this JAMMA?" Turns out no, it's not. its some sort of edge connector I guess. Take a look:
I have a new connector ordered, and hopefully I will have it sometime this coming week.
Also, can anyone tell me what the name of this connector is? I need to get one for the new power cable to plug into the existing setup.