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Georgevlado · 6 February 2020, 02:40 AM

So I have a valjoux 7750 tiger From 1999 I’m pretty sure it was never serviced.
the watch slowly lost time over the time about two years until the point I was losing 15-20 min a hour.
I stopped wearing the watch and put it in the safe until I got time to give it a service.
a year passes and I’m ready to take it for service so I wind the watch to see how much time it’s losing.
I wind it fully starts running on the 2nd or 3rd turn then give it a shake to get the 7750 wobble.
3 days later im wearing it night and day and it’s still keeping good time can someone give me an explanation

still gonna give it a service but I’m holding off now

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kieselguhr · 6 February 2020, 03:42 AM

Maybe when you noticed it wasn’t keeping good time your main spring wasn’t fully wound? Keep an eye on the watch and be sure to fully wind it a full 40 rotations.

Honestly I would turn it in for a service anyway. I am not sure when the cutoff was but I don’t believe they were using synthetic lubricants pre 2000. Also gaskets could be dried out thus compromising water resistance of the oyster case

Chewbacca · 6 February 2020, 03:49 AM

The longer you wait to overhaul the movement, it could cost more on a chrono.

vesnyder · 6 February 2020, 03:50 AM

Let us know what the service costs. I have a couple ETA/Valjoux 7753 movements and am curious what the service costs will be. Thanks

Chewbacca · 6 February 2020, 03:54 AM

Quote:

Originally Posted by vesnyder

Let us know what the service costs. I have a couple ETA/Valjoux 7753 movements and am curious what the service costs will be. Thanks

I paid $950 on a SeaMP chrono in 2018. Typically 30% more than a non chrono.

copernic83 · 6 February 2020, 05:50 AM

Last year I paid about 450€ to service a Breitling with a 7750 that had never been serviced (I bought it new in 2001).

Georgevlado · 6 February 2020, 06:00 AM

Quote:

Originally Posted by vesnyder

Let us know what the service costs. I have a couple ETA/Valjoux 7753 movements and am curious what the service costs will be. Thanks

A good watch maker near me charges $500 for an overhaul plus parts that’s about average for a chrono

6 February 2020, 02:40 AM	#1
Georgevlado "TRF" Member Join Date: Oct 2018 Location: Florida Posts: 141	Tudor Valjoux 7750 questions has this happen to or maybe someone could explain? So I have a valjoux 7750 tiger From 1999 I’m pretty sure it was never serviced. the watch slowly lost time over the time about two years until the point I was losing 15-20 min a hour. I stopped wearing the watch and put it in the safe until I got time to give it a service. a year passes and I’m ready to take it for service so I wind the watch to see how much time it’s losing. I wind it fully starts running on the 2nd or 3rd turn then give it a shake to get the 7750 wobble. 3 days later im wearing it night and day and it’s still keeping good time can someone give me an explanation still gonna give it a service but I’m holding off now Sent from my iPhone using Tapatalk

6 February 2020, 03:42 AM	#2
kieselguhr "TRF" Member Join Date: May 2013 Real Name: Nick Location: Las Vegas Watch: 1601 Posts: 10,615	Tudor Valjoux 7750 questions has this happen to or maybe someone could explain? Maybe when you noticed it wasn’t keeping good time your main spring wasn’t fully wound? Keep an eye on the watch and be sure to fully wind it a full 40 rotations. Honestly I would turn it in for a service anyway. I am not sure when the cutoff was but I don’t believe they were using synthetic lubricants pre 2000. Also gaskets could be dried out thus compromising water resistance of the oyster case

6 February 2020, 03:49 AM	#3
Chewbacca Banned Join Date: May 2012 Real Name: CJ Location: Kashyyyk Watch: Kessel Run Chrono Posts: 21,112	The longer you wait to overhaul the movement, it could cost more on a chrono.

6 February 2020, 03:50 AM	#4
vesnyder "TRF" Member Join Date: Nov 2018 Real Name: Vance Location: North Coast Watch: GMT II Posts: 1,558	Let us know what the service costs. I have a couple ETA/Valjoux 7753 movements and am curious what the service costs will be. Thanks

6 February 2020, 05:50 AM	#6
copernic83 "TRF" Member Join Date: Sep 2019 Location: Europe Posts: 58	Last year I paid about 450€ to service a Breitling with a 7750 that had never been serviced (I bought it new in 2001).

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