It will be a couple days before I can check the bottom of the chassis but I can tell you it was just rebuilt. New flyback, caps, pots, width coil, etc.. The monitor was tested after the rebuilt chassis was installed in it using my JAMMA test rig using a 60 in 1 board. It was perfect, real nice pic.
The wires from the original, untouched, game harness for the monitor are all in one 6-hole flat Molex plug. The game uses positive composite sync. so, there is no second 3-hole plug for negative sync at all. The way it is set up it would seem impossible to hook the sync incorrect.