The general illumination dims each time the left flipper button is pressed and held. The lower left flipper's EOS switch opens properly when the flipper is up.
GI dims whenever the left flipper button is held: upper left flipper EOS not opening
Cause: The upper left flipper (on the same button) had an end-of-stroke switch that was not opening, so that coil's high-power winding stayed on while the button was held and dragged the supply down.
Checks
- Hold each flipper up in turn and check that its EOS switch opens; include the upper flipper that shares the button.
- Feel whether a flipper coil gets hot after being held for a short time.
Fix
- Adjust (or replace) the upper flipper's EOS switch so it opens fully when the flipper reaches the end of its stroke.
Systems
Games
Related tips
- Both right flippers dead with power present: dirty cabinet button contacts
- Small upper flipper fires repeatedly and drops: EOS contact tension
- Upper flipper weak and won't hold: second leaf switch on the lower flipper not touching
- Two upper flippers die after cleaning EOS switches: readjust the break-make pairs
- Flipper won't kick but holds if lifted by hand: dirty or worn EOS switch
- Solenoid fuse blows when a flipper is used: worn spacer in the EOS switch stack
- Flipper sometimes ignores the first button press: replace the EOS switch
- Flipper machine-guns when the button is held
Source: Pinball Repair help group!! (Facebook group)