Quoted from pinballinreno:
Get one of the Ebay used mainboards.
They are fairly inexpensive right now and can be hard to get since they are discontinued from
Took your advice and picked one up that’s allegedly new. Wondering if I should take the time to swap it in now to verify that it works? If it was as simple as a swap out I’d do it for sure but I don’t really want to move the cpu chip for no other reason than to test the board.