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Museum of the Game® & International Arcade Museum® Forums
Has two issues I can find.
Will boot to nvram bad error some times, but if you press down on daughter board near CN1 it will boot. I reflowed both sides on connector, no change. I put devout in female side of connector also to see if pins are dirty. Haven't spent much more time on it.
Has graphics issues once it does boot in sprites, backgrounds all look good.