Bally AS-2518-54/132 & Midway A084-91616-A000 Power Supply Board

Power Supply/Voltage rectifier board used in early solid state Bally and Stern pinball machines.  This board is designed as a replacement for the Bally AS-2518-54, AS-2518-132, and Midway's version A084-91616-A000 found in the lower cabinet of later classic Bally games. When designing this board Big Daddy didn't just make a copy, he did his research and made improvements and fixed faults the OEM boards and other reproductions had.  One of the best on the market!

Features:

• Board is designed to replace the different -54 varieties: Assembly version 2948 413 had one 20Amp fuse at F5 for both the cabinet/playfield GI and the backbox GI, Assembly version 2948 544 had two 15Amp fuses splitting the GI
• Board also replaces the -132 version found in Granny and the Gators and Baby Pacman, having 6A diodes. Please note you will need to change fuse F3 from 4A to 6A (not included)
• This rectifier board uses top mounted bridge rectifiers with proper heat sinks, which is a design improvement over the original bottom mounted bridge rectifiers. Heat sink grease or compound is used, and not all makers take that step
• Six test points are provided at the top of the board (five for voltages and one for ground) so that even an amateur can easily measure board voltages
• An LED indicator is provided next to each of the 5 voltage test points (TP1 through TP5). The LED is on when voltage is present
• The printed circuit board is fabricated with thick 2 oz. copper and all traces meet or exceed the sizes recommended by IPC-2152 for current capacity
• A ground plane is provided on both sides (top and bottom) of the board. The negative output of each bridge rectifier is connected to the ground planes, which handles the high combined current from the bridge rectifiers
• High current fuse clips are utilized for F1, F5 and F6. The other fuses are well under 10 amps so normal fuse clips are used at those locations. Some other makers including OEM used underrated clips
• The board mounting holes are identical to existing OEM boards
• (7) brand new standoffs are installed. Not all mounting plates had all the holes drilled but it still keeps the board from flexing when connectors are plugged in. You will need to use your old screws, none are included
• More wording under the fuses give information about their function and when fuses can be different. Please note F4 needs to be changed to a 7A fuse for 4 Flipper games (not included)
  
• Quality name brand parts are used throughout. Fuses are quality Buss, Littelfuse or Bel fuses
• Fuse spacing is correct compared to many reproductions that can leave as much as 1/2 of the fuse end not contacting the clip causing heat issues, see picture
• This power supply/rectifier board is built with readily available through-hole components to facilitate long term serviceability
• All boards are tested installed in a game (Medusa)
• 2 year manufacturer warranty
• Warranty void if your game causes a failure

Used in the following games:  Baby Pacman, Black Pyramid, BMX, Centaur, Centaur II, Cybernaut, Eight Ball Deluxe, Eight Ball Deluxe Limited Edition, Elektra, Embryon, Fathom, Fireball II, Flash Gordon, Goldball, Granny and the Gators, Kings of Steel, Medusa, Mr. & Mrs. Pac-Man, Rapid Fire, Speakeasy, Spectrum, Spy Hunter, Vector, Xenon, X’s & O’s