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Thread: Seiko Kinetic Perpetual 7D48 - seeking advice

  1. #1
    Craftsman
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    Seiko Kinetic Perpetual 7D48 - seeking advice

    Hi all

    My brotherís Seiko Kinetic is broken. The second hand jumps two seconds every other second (I.e. it skips a beat). When the crown is out to the first position, it feels crunchy and nothing sets. When fully out the time sets ok.

    Pics here:

    https://photos.app.goo.gl/L81XEFrrZZnF4tnR6


    Any suggestions who might be able to take a look at it, other than sending back to Seiko for a service. Any independent Seiko experts around who may have an idea what the problem is and if it is worth servicing?

    Alternatively, any views on potential value as is, or if fixed? My brother is open to selling it on either way.

    Many thanks for any constructive comments.

    Cheers

    Ben


    Sent from my iPhone using TZ-UK mobile app

  2. #2
    Probably the reason the second hand is doing that is because the charge level is very low. Try charging the capacitor up first before any attempt to reset the time/date.
    I don't know about the "crunchy" bit but mine will not do anything if the charge state is too low.
    To charge the capacitor you can try using the "violent" version of the "Seiko shuffle". Swing the watch, face up, in an arc of about 90deg's back and forth for about 200 repetitions. You might find that the second hand ticks normally. You might have to "shuffle" for about 500 repetitions before any response depending on how low the charge is. If that doesn't work you could be looking at replacing the capacitor. If so I am sure someone here could help you.
    As regarding a value check the auction sites for broken watch values.
    Good luck.

  3. #3
    Journeyman
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    I also think ( and I am no expert) you have two issues.
    The second hand jumping is classic low charge. So wear more ( go for a run) or try the charger toothbrush method I think I have read about.

    The crown is a separate issue and beyond my knowledge.

  4. #4
    Master
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    Hi. I dangerously consider myself a bit of an expert in kinetics and this is nothing to worry about. This module won't set when in power reserve mode (double tick), with the exception of the main hands.

    I'd presume the "crunchy" crown is just the constant clicking of the crown, which should be adjusting the calendar functions but will be unresponsive until you change or charge the capacitor.

    Easy job, Seiko will do it but it's about £115 now I believe. I do them for forum members at 30 quid but I'm not a professional, I've done hundreds of my own though.

    You might have a specialist closer to home, worth a Google.

  5. #5
    Craftsman
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    Thanks for all the comments. Iíll take them on board.

    Ben


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  6. #6
    Craftsman
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    Iíve used these people for kinetic service and repair. Excellent job on mine, even done a very light case and bracelet refinish.

    https://kinetic-repairs.co.uk/seiko/

    Regards

    V


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  7. #7
    Craftsman
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    Quote Originally Posted by vertex View Post
    Iíve used these people for kinetic service and repair. Excellent job on mine, even done a very light case and bracelet refinish.

    https://kinetic-repairs.co.uk/seiko/

    Regards

    V


    Sent from my iPad using Tapatalk
    Thank you


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  8. #8
    Craftsman trott3r's Avatar
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    Quote Originally Posted by vertex View Post
    Iíve used these people for kinetic service and repair. Excellent job on mine, even done a very light case and bracelet refinish.

    https://kinetic-repairs.co.uk/seiko/

    Regards

    V


    Sent from my iPad using Tapatalk
    Have you tried their kinetic charger?
    Supposedly a moded auto winder

  9. #9
    Craftsman
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    Hello.

    No I havenít tried it. There are various YouTube videos on how to modify a watch winder for kinetic watches.

    Regards
    V


    Sent from my iPhone using Tapatalk

  10. #10

    Seiko Kinetic Perpetual 7D48 - seeking advice

    I used a braun toothbrush charger on mine. If you Google it youíll find lots of info. Charged mine from flat to full overnight.


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    Last edited by RobDad; 25th June 2022 at 00:08.

  11. #11
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    Last edited by spud767; 25th June 2022 at 13:27.

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