Description Voltage rectifier board used in most late 1980’s  solid state Bally pinball machines.  See game listing below to see which games this supply supports. This board is a direct replacement for the original OEM rectifier board.   The original power supply that this board replaces is Bally part number:  AS-2518-54 Key Benefits – Discrete 5A diodes replacing one Bridge Rectifier – 100% Through-hole components for future serviceability – 100% Off the shelf commercially available parts (no custom parts) – Test points added to check all outgoing voltages – All new (not 20 year old) components and PCB Game Listing, Bally Black Pyramid BMX Centaur Centaur II Cybernaut Eight Ball Deluxe Eight Ball Deluxe Limited Edition Elektra Embryon Fathom Fireball II Flash Gordon Kings of Steel Medusa Mr. & Mrs. Pac-Man Rapid Fire Speakeasy Spectrum Spy Hunter Vector Xenon X’s & O’s