PCB Problems: Ms. Pac / Galaga Reunion

11111steve

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Hi all,

I have 2 Ms. Pac / Galaga PCBs that I am trying to troubleshoot

The first PCB:
Plays, but there is no Ms. Pac or ghosts in the maze, also no galaga ship. I cleaned and reseated ROMS, also checked for physical damage to board- none.


The second PCB:
plays but there is a slight glitch. The galaga ship slows / delays when changing directions. happens about 10% of the time. I checked all connections to the joystick and harness. everything is tight. I would just swap it out to another cabinet to isolate the problem, but the PCB is at a friends house. To me this doesnt seem like a harness / connection problem.

Thanks to anyone with any input!

Steve
 
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