Museum of the Game® & International Arcade Museum® Forums
Hey all,
Picked up a Ms Pac-man cabaret from PA a few weeks back. I got it functioning more than when I picked it up, but I can't seem to get past this issue and was hoping someone could point me in a direction.
When I bought it, only a few sprites would show up on the screen.
Initially, I thought it was the VRAM addresser board as when I reseated it, I would get double of the Bally/Midway box on the screen, and after screwing with it more I could get a fairly consistent picture.
20% of the time it would crash before the introduction of the ghosts.
The other 80% it will crash when the first maze appears.
So I bought a new one, no dice. Same issues as before.
Seeing as there was a bit of corrosion in the socket itself, I replaced the socket. No dice on that either.
This is where I'm at with how it plays. The video will describe it better than I can.
The crash is mostly inconsistent. Sometimes I'll get a full maze, sometimes pieces missing, sometimes 80% of the maze is missing, sometimes it'll crash adding a single credit, sometimes it'll crash before it even finishes drawing the Bally/Midway box.
I don't know great places to check for voltages but:
Off the 10,000uF caps I get a solid 5V.
Off the 2200uF 25V cap near the volume knob, I get about 12.2V.
Any direction would be appreciated!
Picked up a Ms Pac-man cabaret from PA a few weeks back. I got it functioning more than when I picked it up, but I can't seem to get past this issue and was hoping someone could point me in a direction.
When I bought it, only a few sprites would show up on the screen.
Initially, I thought it was the VRAM addresser board as when I reseated it, I would get double of the Bally/Midway box on the screen, and after screwing with it more I could get a fairly consistent picture.
20% of the time it would crash before the introduction of the ghosts.
The other 80% it will crash when the first maze appears.
So I bought a new one, no dice. Same issues as before.
Seeing as there was a bit of corrosion in the socket itself, I replaced the socket. No dice on that either.
This is where I'm at with how it plays. The video will describe it better than I can.
The crash is mostly inconsistent. Sometimes I'll get a full maze, sometimes pieces missing, sometimes 80% of the maze is missing, sometimes it'll crash adding a single credit, sometimes it'll crash before it even finishes drawing the Bally/Midway box.
I don't know great places to check for voltages but:
Off the 10,000uF caps I get a solid 5V.
Off the 2200uF 25V cap near the volume knob, I get about 12.2V.
Any direction would be appreciated!