SKU: MPUSEC Categories: , , ,


Part Number MPUSEC

Williams / Bally MPU Security MPU Board

MPUSEC This board is a plug and play replacement for the original  Bally / Williams WPC-S Security  MPU processor board.  The original MPU board that this board replaces is Bally / Williams part number A-17651-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.  

 No aftermarket custom components.

 Socketed through hole socket 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, Security Chip 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

  • Corvette
  • Dirty Harry
  • Indianapolis 500
  • Jack-Bot
  • Johnny Mnemonic
  • No Fear
  • Red & Ted’s Road Show
  • The Flintstones
  • The Pinball Circus
  • The Shadow
  • Theatre of Magic
  • WHO Dunnit
  • World Cup Soccer