!!HELP!! Seiko 5 10 Minutes fast per day!
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  1. #1
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    !!HELP!! Seiko 5 10 Minutes fast per day!

    I have a black SNK809 that fell of my wrist when removing it for the night and hit a hardwood floor from about 4 feet. It immediately starting running 10 minutes fast per day or about 0.5 sec per minute. I have tried the "taps on the back" and on the side and such but it is not working. I have a tool I 3d printed to unscrew the back safely if that is needed to fix it. I do not think the adjuster arm has enough travel to compensate for that kind of error.

    Here are some close up pictures of the movement.

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    Other than running fast the movement seems to work fine. Surely there is a way to fix it. I would be very appreciative of your help.

    Thanks so much in advance.

    Bob

  2. #2
    Member swissgmt's Avatar
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    Sounds like the impact may have displaced the hairspring, it may be hung up on something making it's length shorter and causing the crazy gain. Look at it under a loop and see if you can see where it is caught up.
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  3. #3
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    You've probably knocked the regulator out of position, they usually make an approximately 90 degree angle with the other lower lever (do not touch the lower lever that points to the case). Heres a pic of the lever that might need nudging towards the centre of the watch to speed it up.

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  5. #4
    Member BrentYYC's Avatar
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    Quote Originally Posted by swissgmt View Post
    Sounds like the impact may have displaced the hairspring, it may be hung up on something making it's length shorter and causing the crazy gain. Look at it under a loop and see if you can see where it is caught up.
    This is definitely worth looking at. I had this exact problem with a watch of mine that suffered a shock.

  6. #5
    Member mpalmer's Avatar
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    Welcome to the forums!
    itsajobar likes this.
    "The stuff that dreams are made of…" - RGM ‘801 EE Motor Barrel’

  7. #6
    Member DanceCommander's Avatar
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    good excuse to buy a new watch!
    itsajobar likes this.

  8. #7
    Member obomomomo's Avatar
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    I've heard/read about this before, but don't remember exactly where... Do a search either here in WUS, TZ forum or SCWF. The solution I read about was pretty simple, if it's a case of the spring somehow being displaced or caught up on itself. You are supposed to take the watch and slap it really hard in the palm of your hand to free the spring. I know it seems a counter intuitive thing to do but I'd try that before opening up the watch to regulate yourself. That would be a last resort, Seiko movements are notoriously hard to regulate yourself.
    Last edited by obomomomo; October 6th, 2015 at 12:47.
    Bulova> 96B251. Casio> 5600E. Damasko> DS30. GrandSeiko> SBGH205. Rolex> 114060, 16710. Seiko> SARB017, SARB033, SBDX017, SLA017.

  9. #8
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    Wow! I did not expect that much response. Thank you all!

    I did try the tap on the front and back trick and it did not help. I did however, get a 10x loupe and take some pics with my camera. The spring is in the slot on the end stud and regulator stud. However, I found a funny curve in the spring about where the "K" and "O" is in Seiko. I have highlighted this part of the spring in the below pictures. I have compared this to the pictures of other 7s26's innards online and cannot find one that has this curve. Does like look like a bent hairspring? The spring is not broke, per se, it still oscillates, albeit fast. I am attaching pictures below to get your opinions.

    Thanks a ton!

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  10. #9
    Member swissgmt's Avatar
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    Here is a picture (borrowed from the web) of a new 7s26c which is the movement in your watch:

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    Unfortunately it shows the same bend in the hairspring in the exact spot as you photo, so no this is not the cause of your problem. It is supposed to have this geometry. Changes have been made to the 7s26 movement, four versions at least of this movement including the "c" revision that you have, so you may have been looking at pictures of a version other than the movement in your watch. If you can find a watchmaker in your area, not a jewelry store unless they have one on staff, they can probably diagnose this pretty quickly and fix it for you. If they charge more that half the price of a replacement Seiko of the same type, just buy a new one.

  11. #10
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    Re: !!HELP!! Seiko 5 10 Minutes fast per day!

    This watch is $65 on amazon.

    Buy a new one and take this one apart to learn some .....
    JLC Heraion Chronograph
    Rolex Sub 11610 & Datejust
    Omega Speedmaster Professional Hesalite
    Baume Et Mercier Capeland Flyback Chrono
    Frederique Constant Classic Moonphase & 303mc4p6
    Hamilton Jazzmaster Regulator
    Tissot Le Locle
    Steinhart Type A B-Uhr & Marine Chronometer
    Citizen Calibre 5700
    Seiko SNDF87P1 Chronograph & snk793

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