Hey guy’s, I have a CPS1 stack that has a start button issue- doesn’t register. I have narrowed it down to a chip on the B board, except I have no idea what chip. Anyone know which chip(s) is responsible for the start input?
CPS1 B board START button input Issue
- Thread starter -Ace-
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YesAffinity
Enthusiast
What B board revision is it?
xodaraP
Legendary
I'm pretty sure all inputs are handled via the C board? Might be a bad trace between B and C
AlxUnderBase
Enlightened
The command comes from A board ... B boards usualy are rom boards . right? Start function from player 1 or player 2 ?
ps: can be the custom resistor array or the IC after it (it shoud be a 74LS244 to replace but you must check to see if is dead or not)
jammarcade.net/files/Schematic…hematics_new_revision.pdf
ps: can be the custom resistor array or the IC after it (it shoud be a 74LS244 to replace but you must check to see if is dead or not)
jammarcade.net/files/Schematic…hematics_new_revision.pdf