After a full rebuild, the upper flipper can't send the ball up the ramp when it is held by the magnet, so the magnet seems too strong.
Rollergames upper flipper too weak to make the ramp off the magnet: wrong plunger
Cause: The upper flipper is meant to use a plunger and link that differ from the lower flippers. A standard rebuild-kit plunger had been fitted, which shortens the stroke and costs power.
Checks
- Compare the upper flipper's plunger and link part numbers with the parts list in the manual; upper playfield flippers often use different parts.
- Check the coil, coil stop and magnet coil are the correct types.
Fix
- Fit the correct upper flipper plunger if you can get one.
- If it is unavailable, as here, fit a stronger flipper coil to make up for the shorter plunger.
Systems
Games
Related tips
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- Replacing the flipper plunger and link
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- One or both flippers weak
Source: Pinball Repair help group!! (Facebook group)