Early Black Knights use the System 6 power supply
A few early Black Knights left the factory with the older System 6 supply. Tell them apart by where the transformer sits: a backbox-mounted transformer goes with the System 6 board, a cabinet-mounted one with the System 7 board.
Systems
Games
Related tips
- No +5 V on a System 7 power supply
- Power circuits in a System 3-7 game
- What the power supply board takes in and puts out
- Test the power supply with its outputs unplugged
- Swapping power supply boards between generations
- High-voltage supply rebuild parts, System 3 to 11C
- Burnt GI plugs on the power supply board
- Parts of the 28 V solenoid supply
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)