Display voltages the A8 board should supply

The controller supplies the dot matrix display with +62, +12, +5, -100 and -112 V DC.

The A8 controller makes roughly +62 V, -100 V and -112 V for the display; keep hands off it with power on.

Systems

• Gottlieb System 3

Related tips

• Dot matrix dark: +62 V missing
• Never hot-plug the A8 board or the display
• Rebuilding the A8 high-voltage section
• Garbage on the dot matrix at power-on
• DMD controller LED stays on
• Nonsense message at boot, game stuck in a loop
• A5, A6, A8 and A20 plug identification

Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)