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Fault Finding / Fault Diagnosis

Valjoux 7733 issue

sylvav

By sylvav
October 2, 2023 in Fault Finding / Fault Diagnosis

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sylvav

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sylvav

Posted October 2, 2023

Posted October 2, 2023

Hello

i have a valjoux 7733 that has a problem when the chronograph is launch: the central second hand sometimes jumps from 0 to 15 seconds.

i have checked that the hammer is not touching the chronograph runner.
Do you already experience the same issue?

thank you

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Distinguished Member

nickelsilver

Posted October 2, 2023

Posted October 2, 2023

Is the friction spring for the chronograph runner there, and in good shape?

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