Quoted from GoldenBear:I think those cables are really just grounds and power to the small board and I just started troubleshooting this board and i think I can do some simple things first before rebuilding the connector. Not that rebuilding the connectors would be difficult, but I am thinking maybe the reason the connector was rebuilt is that my games main driver board has issues and this was a workaround.
The images you posted are the power inputs to the Auxiliary 8-Driver board as well as the main Power Driver board. I don't see anything incorrect about your connectors and they look to be factory. Those attached sticky labels are factory.
00_w95_auxiliary_8-driver_power.jpg01_w95_power_driver_auxiliary_8-driver_connections.jpg
Quoted from GoldenBear:it might be an opto issue despite no flickering or any way to provoke the issue in the switch matrix nor any other problems with all the other switches , however after replacing all the optos, the connector, the 10 opto board and all connectors leading to the opto board the issue persists.
It does sound more like an opto issue rather than an issue with Auxiliary 8-Driver board.
Quoted from GoldenBear:I swapped in a new RD cpu board, I have tried 2 different main driver boards from my other machines, and I replaced all the ribbon cables and the CPU Rom all to no avail. I also tested all diodes and replaced just in case about a third of them on all switches. I activated all switches while in switch test mode and was unable to create any issues with the opto in question.
Have you considered a problem with the +12VU (unregulated +12V circuit)? This is used by the 16-opto board as well as the Auxiliary 8-Driver board. Often, modifications (mods) to the system tap this as a power source and this causes an excessive draw on the circuit and results in the voltage level sagging. When this happens, it can interfere with opto functionality.
Quoted from GoldenBear:It looks like the 8 driver board controls the right upper flasher so I might look at the schematic to see if it is possible that a faulty 8 driver board could cause this or more easily just disconnect the connectors to the flasher and see if the problems follow, which I have yet to do as simple as that is.
Extremely unlikely. The flashers on this board are under software control. When things go wrong on this board, it's more likely to be complete failure (flasher does not work or is locked on). Errant flashing (under incorrect circumstances) is more likely to be errant input to the software causing errant response.
The manual lists J137 but J136 and J137 are ground. They are identical. Note the board also separates "power ground" and "signal ground" but they are tied (and used) together as a single common ground reference.