The head doesn't stop on the right face during play.

Bride of Pinbot shows the wrong face

Cause: Cracked solder joints on the relay on the small under-playfield board that sets the face motor's direction, so the relay doesn't always pull in.

Checks

• Inspect the relay's solder joints on that board.

Fix

• Reflow the relay's solder joints.

Systems

• WPC Alpha-Numeric

Games

• The Machine: Bride of Pinbot

Related tips

• Flipper blows its fuse after a rebuild: diodes shorted by reversed power wires

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