Rottendog Amusements

We are THE Lowest Cost Providers of Replacement Pinball Circuit Boards in the World!

* All of our Boards are Complete Redesigns of Originals *

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Part Number MPU089

Williams / Bally WPC89 MPU Board

MPU089- This board is a plug and play replacement for the original  Bally / Williams WPC089  MPU processor board.  The original MPU board that this board replaces is Bally / Williams part number A-12742-xx (where xx is the game number).

Key Benefits Over Original / Replacement Boards

- Remote battery holder (no future acid damage).

- ZERO surface mount components.  This is not a throw away board.  We ONLY do Through-Hole Designs

- No custom components.

- Socketed through hole connector for RAM Chip.

- All new (not 20+ year old) components and PCB

- All of our components match the original schematic component designators, so you can troubleshoot with the original schematics or our schematics!


Most of our distributors offer this board without game ROM, ASIC and Microprocessor.  This is done to keep the price of the board as low as possible.  The Game ROM, ASIC and Microprocessors rarely go bad and are socketed so they can be moved from the original board to our board with minimum of effort.  Please check with the distributor you choose to see which chips you may need to move!  Call us direct if this confuses you.

Game List

Addams Family

Addams Family Gold

Black Rose

Creature From the Black Lagoon

Demolition Man

Dr. Dude

Dr. Who


Fish Tales



Gilligan's Island

Harley Davidson


Indiana Jones

Judge Dredd

Machine Bride of Pinbot, The

Party Zone


Star Trek, The Next Generation


Terminator 2

The Machine, Bride of Pinbot

Twilight Zone

White Water