During maze mode the maze lights sometimes stay dark, and they flicker when the flippers or slingshots fire or the playfield is moved, even with a new LED maze board and reflowed lamp boards.
Maze lights flicker or go dark when flippers fire: loose fuse holder
Cause: A loose fuse holder near the flipper coils under the playfield, upset by vibration.
Checks
- With the game on, gently tap around the under-playfield fuse holders and connectors near the flippers and watch the maze.
Fix
- Tighten or replace the loose fuse holder.
Systems
Games
Related tips
- Playfield GI drops out when the flippers fire: loose ground wire near a lamp
- Mr. & Mrs. Pac-Man GI flashes in attract but stays off in play
- No general illumination after a new rectifier board, fuses good: check the bulbs
- Controlled lamps flicker or stay out after fitting a replacement lamp driver with LEDs
- None of the controlled lamps light
- One controlled lamp does not light
- LEDs flicker in controlled lamps on Bally and Stern SCR lamp boards
- Several neighbouring lamps out on an under-playfield lamp board: dirty socket contacts
Source: Pinball Repair help group!! (Facebook group)