Some or all of the general illumination is out.

GI out on Banzai Run and later: burnt interconnect connector 2J6

Cause: The GI connectors on the interconnect board overheat. The input connector 2J6 (yellow wires) is the most likely; the outputs 2J7 (backbox), 2J9 (playfield) and 2J10 (cabinet and coin door) can also burn.

Checks

• Check the GI fuses on the interconnect board.
• Inspect 2J6, 2J7, 2J9 and 2J10 for discoloured pins, burnt housings and cracked header joints.

Fix

• Replace the header pins, housing and female pins of the burnt connector.

Systems

• Williams System 11B
• Williams System 11C

Related tips

• The interconnect board (Banzai Run and later)
• Right flipper dead after a coil cooked: burnt trace on the interconnect board
• Roulette wheel not working: worn J15 connector on the interconnect board
• Interconnect board from another game fitted: the values Jokerz needs
• No drop target switches register: 12 V feed lost at a loose connector
• Lamps under the slingshots out: wire in the wrong position in interconnect plug J12
• Flashers dead on Banzai Run and later: interconnect board resistors
• Banzai Run: interconnect board flash resistors

Source: Repairing Williams System 11 Pinball 1986 to 1990, Deel 1, Clay Harrell (pinrepair.com)