Power supply board versions and their +5 V filter capacitors

Laser War to Guns N' Roses use power supply 520-5047-00, -01 or -02, with one 18,000 uF 25 V capacitor at C4 filtering the +5 V. With the 192x64 display games came 520-5047-03, which uses four 4,700 uF 25 V capacitors at C11-C14 instead, so one failed cap does not stop the game.

Systems

• Data East CPU Version 1/2
• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Related tips

• Power supply board versions are not interchangeable
• Z1 on the power supply is a varistor, not a diac
• Power supply CN1 pinout, pins 1-6
• Power supply CN1 pinout, pins 7-12
• Power supply gives no +5 V
• No or low +5 V from the power supply
• Won't boot, only some lamps on: bad capacitor joints on the power supply board
• A 520-5047-02 supply can stand in for a 520-5047-01

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Two, Clay Harrell (pinrepair.com)