Mid-game the flippers stop and the display shows one permanently lit vertical line; after a restart the game keeps launching balls. GI and controlled lamps are fine.

Indiana Jones: flippers die, one display line lit, balls keep launching

Cause: The +12 V supply has failed, usually fuse F116 or bridge BR5. Part of the display power comes from it and it powers the optos, hence the dead flippers and the trough firing.

Checks

• Check F116 and BR5.
• If 12 V is good, unplug the ribbon to the Fliptronics and sound boards, leaving just the display controller, and see if the display clears to show the error report.

Fix

• Replace the fuse or bridge rectifier.

Systems

• WPC DCS

Games

• Indiana Jones: The Pinball Adventure

Related tips

• Flippers, mini playfield and optos dead with endless ball search: blown 12 V fuse
• Resets when a drop target or coil fires: burnt power and GI connectors
• STNG won't start and keeps ejecting balls: fuse F103
• Indiana Jones: balls keep ejecting from a crushed mini-playfield switch
• Indiana Jones: left slingshot switch touching a GI socket
• Indiana Jones: no optos work, check J905 on the Fliptronics II board
• Indiana Jones: Path of Adventure stutters when moved with the flipper buttons
• Indiana Jones: finding which optos make the Path of Adventure stutter

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Three, Clay Harrell (pinrepair.com)