Did you ever get this sorted mate ?Okay, so this is strange. Right before my party, the machine started freaking out and just showed colored triangles on the screen. I tested the voltage at the board, and it had dropped to 4.3. The AR2 pot was in the max voltage configuration. So, I swapped my AR2 with another one I have, and the new one fixed the game, and puts out plenty of voltage, however this didn't fix the NVRAM at all.
I had assumed that my problem was related to incorrect voltages at the board, but based on this test I would say that isn't the issue at all?
Ours has just developed this issue and after reading this thread i instantly bought the x2212
Awaiting delivery of said chip
Thanks
