Williams System 3 to 6 MPU/Driver Board, Part #MPU327


Williams System 3 to 6 MPU/Driver Board replaces both the MPU board AND the Driver board for ALL Williams System 3, 4, and 6 pinball Games. Will Work For the Following Bowlers

Big Strike


Triple Strike


SKU: MPU327 Categories: , ,


This board replaces both the MPU board AND the Driver board for ALL Williams System 3, 4, and 6 pinball games.

Benefits over original Williams MPU and Driver board

 Eliminates the extremely problematic interconnect connector that fastens the original boards together

 Eliminates the need to swap out game ROMs.  Game ROMs are selectable via DIP switch

 Comprehensive on-board diagnostics using Leon’s test code via DIP switch http://www.flipper-pinball-fan.be/

 Uses 6802 instead of 6800 microprocessor

 Uses a single commercially available oscillator component for timing

 Uses Williams WPC style controlled lamp circuit design (TIP107)

 Uses Logic Level FET drivers for all solenoids and lamp controls

Uses sockets for common failure components (micro, PIAs, and RAM).

 Uses a low voltage reset to keep microprocessor from locking up

This game does use custom software that is NOT compatible with your original game’s board set.

Updates to this software will, I’m sure, be modified over time and updates will be made available through this website.

To view the latest install and testing instructions, click here – Last updated 3/22/2011

Latest software version is MPU327-BD.  To download this version, click here.  To see the software version history, click here.

  • Game Supported
  • Algar
  • Alien Poker
  • Blackout
  • Contact
  • Disco Fever
  • Fire Power
  • Flash
  • Gorgar
  • Hot Tip
  • Laser Ball
  • Lucky Seven
  • Phoenix
  • Pokerino
  • Scorpion
  • Stellar Wars
  • Time Warp
  • Tri-Zone
  • World Cup