• Personally, I wouldn’t bother getting that fully serviced as it’s mot cost-effective, unless you are very attached to it.

    Is it only the chrono function which doesn’t run? Do the start/stop and reset buttons actuate the levers inside? It could be something quite trivial which is stopping it from starting. The “start” function simply moves an initially static wheel to engage with another moving wheel to advance the chronograph works. The depthing of this engagement can go out of alignment, so see if you can study the movement while exercising the start/stop button.

  • Thanks for the reply, watch runs although a full wind only runs for 20 or so hours (should be 40 for this movement new if google is to be believed).
    The crown doesn’t stay out when setting the time which is annoying but fine, just the chrono doesn’t operate.
    The buttons do actuate the levers but there’s no positive engagement that I can feel (no click). I took a couple of videos I can share if that’s any use?

  • Running time most likely due being dirty / dried out oil, as it will have a modern mainspring which don’t tend to “set”.

    Crown not snapping positively between winding and setting positions is usually due to a snapped “set lever spring”. Quite common, cheap part.

    Post a video if it’s easy enough!

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