Williams Pinball Machine System 3 Mpu Board

  
A very nice system 3 MPU board. Has all the mods as listed on Pinwiki to bring it up to the System 4 specification. Can be used in the following pinball machines: Algar, Alien Poker, Blackout, Contact, Disco Fever, Firepower, Flash, Gorgar, Hot Tip, Laser Ball, Lucky Seven, Phoenix, Scorpion, Stellar Wars, Time Warp, Topaz Shuffle, Trizone and World Cup. New IC sockets and headers fitted all round.