After fitting new drop targets and springs, the three-target and two-target banks no longer reset; the reset coil seems too weak.
Drop target banks won't reset after new targets: springs too short and stiff
Cause: The replacement target springs were much shorter and stiffer than the originals, so the reset coil could not push the targets up against them. Binding in the mechanism adds to it.
Checks
- Push the reset bar up by hand: if it resists, the springs are too stiff; if it catches, the mechanism is binding.
- Compare the new springs with the old ones or with others in the game.
- Check the reset plunger and coil sleeve for rust or wear, and that the reset arm falls back by gravity.
Fix
- Fit longer, softer target springs (the original poster used part 265-5003-00); the targets then drop briskly and reset reliably.
- Clean the mechanism dry; avoid wet lubricants, which collect dust.
Systems
Games
Related tips
- One drop target only registers if it is the first one down: reseat and clean the PIAs
- One target also scores its neighbour: a stray switch jumper elsewhere
Source: Pinball Repair help group!! (Facebook group)