Hello
Need help to fix Irem M72 Xmultiply pcb.
The game at power up is stuck on a solid white screen.
Swapping layers pointed the main (middle) board to be the problem.
Started probing the main cpu (nec v30), reset line is low (active high on this one) so it’s ok.
CLK seems ok also.
What should I check next to further investigate?
Need help to fix Irem M72 Xmultiply pcb.
The game at power up is stuck on a solid white screen.
Swapping layers pointed the main (middle) board to be the problem.
Started probing the main cpu (nec v30), reset line is low (active high on this one) so it’s ok.
CLK seems ok also.
What should I check next to further investigate?