On the alphanumeric display, character 16 lights the segments shown in all the other 15 characters.

Funhouse: character 16 copies every other character's segments

Cause: A failed 6184 anode driver chip on the display driver board: U8 for display one, U5 for display two.

Checks

• Note which display shows the fault.

Fix

• Replace U8 (display one) or U5 (display two), both 6184 anode drivers.

The display board carries high voltage; work with the game unplugged.

Systems

• WPC Alpha-Numeric

Games

• Funhouse

Related tips

• Funhouse: flipper buttons won't step through high score initials
• Alphanumeric WPC games: weak or dead score displays

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