Repair of a "Geneoa" quartz-based clock
This quartz-movement clock had a fault where the second hand would stop advancing correctly and just twitch ineffectually on the spot. The root cause of the fault turned out to be quite different than what I expected.
0:00 - Introduction
1:07 - Fault symptom
1:46 - Incorrect assumptions
2:55 - Not all clock movements are equal
4:25 - Investigating deeper
7:09 - Down in the dirt, the fault is found
8:03 - The fix
9:52 - If you have the same problem
10:41 - Thoughts on other clock faults
12:40 - Conclusion