We usually do not do quartz movements, but as a part of my apprenticeship I will service this Certina.
It is missing its winding stem and is not ticking.
Movement looks nice for a quartz watch. You just got to love how Certina just stuck a sticker with their “own” calibre on, even thought it is an ESA movement.The dial is in excellent condition.The date mechanism looks good.After closer inspection I can see that the date corrector operating lever is broken.I borrow a stem from another movement and after testing see that the watch is running with a fairly low consumption of 2.58μA but there is dirt in the movement and the date mechanism is sluggish.I start by removing the coil cover. I just love the hand-soldered contacts.The circuit board and coil come out in one piece.Electronics out of the movement. This is moved to the side, as it will not go in the cleaning machine for obvious reasons.Here you can see the hacking lever switch.Gear train visible.All the parts cleaned and ready to be put back in place.Gear train back in place.I fit a new date corrector operating lever.Date mechanism moving freely again.The watch starts ticking when I fit a new battery. I have fitted a new stem with a proper Certina crown. The power consumption is now 2.48μA.Dial and hands back on the movement. The dial colour is actually a very dark brown and not black.The case has some battle scars, but the perfect dial makes up for it;)Not a bad looking quartz watch! All I need now is a Certina bracelet;)
I’ve picked up one of these movements (my favourite quartz) in a cheap donor watch but it came with no stem.
Can you please tell me where you got a replacement stem and/or the part number?
Thanks.
Great to see another post! I thought you guys weren’t posting anymore…I got scared! It’s been more then two weeks.
Thank you! Even if it’s “only” a quartz 😉
Great work! Waiting for more!
Great work as always Mitka! If you would do me the honor, my omega seamaster quartz 120 m “plongeur deluxe” (aka jacques mayol) is in need and want of able hands for a service! 😉
We usually do not do quartz watches, but there are rumors of us accepting some Omega quartz;)
let me know when you do, i already sent the watch to the uk with my sister! (i’m from Mexico and a big Eterna fan as well)
Nice work! Very difficult to get the gears back together isn’t it? I repaired a swiss diver with a eta 255.411 and it took me a lót of time to get the trainbridge back on.
I’ve got an old Greiner quartz tester, very handy to see if a circuit still “lives” and to adjust the rate of the movement 🙂
The pivots of the gears are very thin on quartz watches so one must be extra careful. Worse with ladies movements!;)
The gear train can particularly frustrating on these quartz watches as the rotor is magnetised and often don’t like sitting straight in their jewel hole!
Long time reader, first time poster…
I place an old rotor on the front of the main plate under the rotor. This helps the good rotor to stay up right during assembly.
A screw does the trick as well – that’s what I tend to use. Welcome to the blog!