Galaga / Ms. Pac Reunion PCB - Plays Blind, Burnt Video Ground
A fellow KLOV'r brought his Galaga / Ms. Pac reunion to the repair party today. It was playing blind, and had no monitor installed. We installed a monitor, which we tested, but it still played blind. Pulling the JAMMA Reunion PCB, I noticed the video ground had a blown/burnt trace.
I reconnected the video ground (which connects to the regular PCB ground), but the video still doesn't work. I'm almost positive that I've read about this problem before, but I can't find any info on it now. Anyone know the solution to this? I see there's an HC574, which I think is driving the video... that'd be my first guess, that whatever blew the ground probably also took out that chip. But I'm hoping someone could tell me I'm not crazy and that this is a common problem and that there's a common solution.
Thanks,
DogP
A fellow KLOV'r brought his Galaga / Ms. Pac reunion to the repair party today. It was playing blind, and had no monitor installed. We installed a monitor, which we tested, but it still played blind. Pulling the JAMMA Reunion PCB, I noticed the video ground had a blown/burnt trace.
I reconnected the video ground (which connects to the regular PCB ground), but the video still doesn't work. I'm almost positive that I've read about this problem before, but I can't find any info on it now. Anyone know the solution to this? I see there's an HC574, which I think is driving the video... that'd be my first guess, that whatever blew the ground probably also took out that chip. But I'm hoping someone could tell me I'm not crazy and that this is a common problem and that there's a common solution.
Thanks,
DogP
