I sell/repair A/R-II power supplies, vector monitors (WG6100, Amplifone, and black and white), and Battlezone, Red Baron, Lunar Lander, Tempest, Asteroids/Deluxe, Black Widow, Gravitar, MH, Quantum, Star Wars, and Space Duel PCBs. Also Thief, Millipede, Centipede, Crystal Castles, and Sea Wolf boards.