Pole Position II, RAM 73 error and IC-25

RPO_Z06

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So the game was playing perfect and all the sudden started resetting, I turned it off and restarted it and since then it has garbage on the screen and it switches between an IC25 error and a RAM 73 error.

I reset the ROM 25xx on position 4k and even swapped it for another one with no change, I also checked that socket and made sure the #8 dip switch at 9JA wasn't having an issue and it test good.

Does anyone have any ideas ?

Aside from a ritualistic burning of the cabinet or conducting a seance.
 
Yes, the voltages are good.

I should have mentioned before, my boards have been jumped to all the test points for ground and 5V, I also run a switcher power supply.
 
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