Each time a 10-point switch scores, the 10-point relay pulls in and stays in, and the 10s reel doesn't step.
10-point relay sticks on every time 10 points score: adjust the relay's own switch
Cause: A switch stack on the 10-point relay itself was out of adjustment and not making contact, so the circuit that should drive the next step never closed.
Checks
- Block-test: hold the 10-point relay in by hand and watch which of its switch blades make and break.
- Check the 10s score reel turns freely and its end-of-stroke switch opens and closes.
Fix
- Clean and gap the switch contacts on the 10-point relay so they close firmly when the relay pulls in.
Systems
Games
Related tips
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Source: Pinball Repair help group!! (Facebook group)