debaser138
Well-known member
I've got a Midway Galaga PCB that is booting up to a RAM 2L error. Above that, it has what looks like a backwards C and then a G so it looks like this on the screen:
)G
RAM 2L
I know the problem is on the CPU board as the video board works just fine on my other working Galaga boardset. I cleaned all the black legs on the custom chips. I swapped out the ribbon cable with no change. I also found a bad ROM (A) at 3N on the CPU board and replaced that but no change.
Seems like something on the CPU board that addresses the RAM check is having issues.
Any ideas what I should be looking at?
)G
RAM 2L
I know the problem is on the CPU board as the video board works just fine on my other working Galaga boardset. I cleaned all the black legs on the custom chips. I swapped out the ribbon cable with no change. I also found a bad ROM (A) at 3N on the CPU board and replaced that but no change.
Seems like something on the CPU board that addresses the RAM check is having issues.
Any ideas what I should be looking at?


