so picked up a cpu for my r&b that came out of a simpsons. I did the jumper and not getting it to boot. replaced rom sockets and checked continuity throughout the board. I get the pia light staying on still. so bought a logic probe and started poking around. so checking the pia's, most of them have the same signals except a couple of them. pia at 5f pin 10-18 are low and nothing at pin 19. pia at 8h no signal at all from pin 10-17. could I assume both of these are bad or due to 5f being for coils have low signals due to switch not being activated? new to figuring out board work but having fun learning.
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