Baby Pac-Man
Bally, 1982Hi all, I am looking to buy a working Bally MPU board that will work in a Baby Pac-Man.
I believe the model number is AS2518-133 MPU according to pinrepair.com (not sure if others would work).
I'm not looking at buying a brand new $200 board yet, just something that will get this thing operational!
One of my New Year's resolutions is to get this machine working and unfortunately it didn't come with the MPU.
Vidiot and Solenoid/Lamp Driver Boards look to be in working order.
Thanks for looking!
You can use a -35 mpu with a small modification. I believe this info is also in the pinrepair guide.
Edit: NVM, looks like the conversion info is in the Bally guide. Unfortunately the bally guide is no longer available on pinrepair. However pinwiki has info too...
http://www.pinwiki.com/wiki/index.php?title=Bally/Stern#Bally_AS-2518-35_or_AS-2518-133_Jumper_Info
Thanks for the quick reply and the link!
From the pinwiki and IPDB it looks like they only made the -133 for 3 games (4 if you count Big Bat), so I guess being able to use a -35 should make my quest to find a board easier and hopefully cheaper 
So if anyone has any leads on a working -35 board I would greatly appreciate it!
Thanks again.
IIRC the only thing you have to do to convert a -35 to a -133 is replace the 1N914 diode at CR52 with a 1/4W 2K ohm resistor.
There are obviously ROM differences as well. There's also the home ROM for Baby Pac that pauses the game when you switch between the video and the pinball. Check with Andrew here if he has one:
http://pinside.com/pinball/community/pinsiders/barakandl
You could probably send him your board and he'll get it working 100%.
viperrwk
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Lincoln, NE