ROLLERGAMES (Williams) Aux power driver board

Williams System 11B pinball machines Auxiliary Power Driver Unit
board.

Drop in replacement for Williams and Bally pinball machines using
the System 11B Auxiliary Driver board. This board replaces
original part number D-11813-XXX and D-12247.

New board features include:

• Plug and Play replacement
  
• LED lights for fuse and power supply checks shows status for
  all fuses on the board.
  
• Thicker circuit board for greater mechanical stability
  
• Heatsinks added to bridge rectifiers for cooler operation
  
• High quality 105° C capacitors for longer life
  

Reference:

• D-12247-576 assembly