PAR-4/Bally 5500 MPU

[rvalkenburg]

Hello everyone....
I have been restoring vintage slots (1930-1950) for 20+ years, Mills, Jenkins, etc... I also have restored dozens of the Japanese Pachislo machines over the years as well, guilty pleasure :-).
I recently picked up what I thought was a Bally 5500, which it is mostly but it's actually a PAR-4 unit based on Bally 5500 cabinet and most components except for the MPU, which is their own custom logic board apparently.
I am looking to find what the settings are for the 2 DIP switch banks on the logic board but have not been able to find anything on it yet.


Any help or direction would be appreciated.

[rvalkenburg]

It seems that no one has any information on a PAR-5 logic board.
I was hoping not to have to do a full restoration and replace the MPU with a true Bally MPU, reels and glass.


Someone has to have one of these.... PAR-4 apparently made a ton of these for arcade/boardwalks.

[rvalkenburg]

After carefully removing the paint they used to cover up the board name... This MPU is a Heber Ltd Pluto 5 gaming board.