Hello all,
I have a Space Jam that had some major corrosion on the CPU which required replacing the MPU/Power board. Since installing the board, everything works beautifully except for the R flipper. Here are a few things I have done to test the switch, EOS, coil etc.

1. Jumped the L and R flipper switches. The R flipper button activated the L flipper only.

2. Jumped the L and R flipper coils. The L flipper button activated both coils without any issue.

3. Jumped directly from the R flipper switch to the MPU board directly. Still no response.

4. In the switch DIAG menu, neither the L or R flipper switches show active when pressed, but all other switches activate and deactivate properly.

I am completely lost on what my next step needs to be. All boards were tested on a Terminator 3 prior to being sent back to me for installation in the Space Jam. Any suggestions would be greatly appreciated.

I have put new fuses on both flippers and tested continuity for it since changing the fuses. It's like the programming of the game doesn't know the R flipper switch exists.

In the switch test, neither L nor R flipper switches show up, but the L flipper works in game and the R flipper doesn't.
I have jumped from the L flipper coil to the R flipper coil which allowed the L flipper switch to activate both flippers.
I have also jumped the switches which allowed the R flipper button to activate the L flipper without any issue.

It's a brand new rottendog board, but the same SEGA driver board.

Thank you for your response. If anything else comes to mind, I am all ears.