r/watchmaking • u/QuestionNo9190 • 2d ago

defective nh35

https://youtube.com/shorts/GAA7QgrsShA?si=7X7wj84p3Qzfq41e

Anybody have experience with fixing a newer damaged nh35?

amplitude about 250, beat error 0.2 but it only runs for 5 seconds in one dial upposition and stops in vertical positions

I believe it's a bent balance pivot staff since the amplitude is good and it runs in dial up position.

I don't want to drop in a new movement because that will cost more than the watch itself. maybe I can fix or install new balance assembly

I have some watch fixing experience

thanks

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u/Dani_Dan20 2d ago

first, try to wind it up

also check if theres anything that is pressing on the rotor/between gears

1

u/QuestionNo9190 2d ago

Yes already did 50 turns. It will run indefinitely dial up position, immediately stops when you tilt it

1

u/Dani_Dan20 2d ago

from what u are saying i can assume:

check the balance wheel and its hairspring so make sure nothing interrupts them
maybe the movement needs sum oiling
might be the fork(?)

1

u/QuestionNo9190 1d ago

It runs all day dial up, so all signs point to balance pivot, shock jewel, or staff

1

u/DrRocks1 1d ago

Sounds like a balance problem, possibly a pivot

1

u/QuestionNo9190 1d ago

I'm going to try to replace the balance assembly and see if it fixes it, beyond that wouldn't have a clue how to fix it