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Omega f300

chadders1966
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chadders1966 WRT Addict

chadders1966

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Hi

I have an Omega f300 with 1260/ESA 9164 movement that's not working. It's in good cosmetic condition, movement looks good and no signs of problems, but a new 344 cell gets no reaction - no hum or hand movement.

As I don't know anything about these movements I might need to send it for a service, but I'd like to see if I can find what the problem is first if I can. I suspect it may be the coils. Can anyone explain how I can test them to see whether they are OK or not? Thanks

Stephen

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jdm Distinguished Member

jdm

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4 minutes ago, Chopin said:

You're going to need an ohm meter to test it. Beyond this I can't explain as I've only seen this done once by someone else.

The detailed procedure (which is very intuitive anyway) is in most ETA service sheets but isn't enough to fully diagnose a quartz watch. They can fail mysteriously with good coil continuity. Another thing one can try is a shot of "line free" box but if that doesn't do the trick then a new circuit or mov.t is needed.

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rogart63 Distinguished Member

rogart63

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24 minutes ago, jdm said:

The detailed procedure (which is very intuitive anyway) is in most ETA service sheets but isn't enough to fully diagnose a quartz watch. They can fail mysteriously with good coil continuity. Another thing one can try is a shot of "line free" box but if that doesn't do the trick then a new circuit or mov.t is needed.

That's not a quartz watch :) That's a "hummer" tuning fork movement. Not sure a linefree box will be so good on this?  ESA 1260 is that the daydate model? 

Bad coils can be one problem. They are very difficult to work with as you need a microscope and now what you are doing.  There are a few watchmakers that service this watches. Check electricwatches .....out. 

 

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JohnR725 Distinguished Member

JohnR725

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If you're curious as to what the procedure is for servicing these the manual is attached.. Unless you have prior experience with tuning fork watches and electric watches I wouldn't recommend because the parts are not readily available. The manual is a interesting mix of  two manuals PDF page 29 and  page 31 has the electrical tests related to the coil resistance. Then this watch has an interesting feature four screws and the electronic module and the index wheel  all  are removed as one unit..

ESA 9162 Repair Manual.pdf

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chadders1966 WRT Addict

chadders1966

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John

Thanks for that, just what I was looking for. I very much doubt I will attempt a service myself as I know nothing about the movement, I just wanted to know how to check the coils to see if they were working.

Rog thanks for the suggestion. I had heard of electricwatches, but he is not taking business at the moment according to the website. I had heard there was another person in the UK who works on these (Keith?) but I don't know any contact details.

Stephen

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rogart63 Distinguished Member

rogart63

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9 hours ago, chadders1966 said:

John

Thanks for that, just what I was looking for. I very much doubt I will attempt a service myself as I know nothing about the movement, I just wanted to know how to check the coils to see if they were working.

Rog thanks for the suggestion. I had heard of electricwatches, but he is not taking business at the moment according to the website. I had heard there was another person in the UK who works on these (Keith?) but I don't know any contact details.

Stephen

Could be Keith Tilley maybe?  Have seen his name  mentioned when service this movements.  But can't find any contact info or website. 

I have a speedsonic that i like to send to paul. The cannon pinion is loose. Running good and serviced by Paul some years ago. But he always has so much to do . 

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  • 4 years later...
DavoH New Member

DavoH

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On 1/20/2018 at 6:55 PM, JohnR725 said:

If you're curious as to what the procedure is for servicing these the manual is attached.. Unless you have prior experience with tuning fork watches and electric watches I wouldn't recommend because the parts are not readily available. The manual is a interesting mix of  two manuals PDF page 29 and  page 31 has the electrical tests related to the coil resistance. Then this watch has an interesting feature four screws and the electronic module and the index wheel  all  are removed as one unit..

ESA 9162 Repair Manual.pdf

Hi John, just a note to thank you for posting the link to the repair manual. I just got a mint day/date f300 Constellation off eBay - listed as not working but I thought I'd take a chance. I put a battery in and it started, hums very nicely! However it has some quirks and definitely needs some work so the manual will be very handy. 👍

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  • 9 months later...
DavoH New Member

DavoH

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Hi Alastair, I hope you don't mind my asking but since my earlier post I have gained quite a bit of knowledge on the ESA tuning fork movements but have a question:

I have an ultrasonic cleaner that I intend using, some people say to use shellite but I'm concerned that it may cause the jewels on the clicks to come off.

What fluid should I clean the click wheel and the clicks in? And, how long should they be 'ultrasoniced' for?

I would put the parts in a small jar with screw top containing shellite(?) and immerse the jar in warm water in the ultrasonic cleaner. The click wheel will remain in its normal position on the module, but I am thinking of removing the resonator and its attached click jewel and also the other click - and cleaning those separately.

Your thoughts?

Many thanks,

Dave.

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Alastair WRT Addict

Alastair

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Both click and resonator plus wheel should be assembled to plate--remove coils--then cleaned as one--thats what tha manuals seem to imply...

I use either hairspring degreaser or naptha in small jar in UC for short time. Dont use any alkalis or ammonia cleaners.

Then dissassemble wheels-(great care), check pre-positions with gauge, correct as required.

 

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  • 3 months later...
DavoH New Member

DavoH

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Posted

Hi all,

 Has anyone managed to find a replacement transistor for these movements?

I have several that have bad transistors and could repair them if I knew the specifications of the one used in these movements to get a substitute.

 

Thanks,

Davo.

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