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Amusing failure in Omega analogue watch

Discussion in 'Hobby Electronics' started by Franc Zabkar, Aug 21, 2009.

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  1. Franc Zabkar

    Franc Zabkar Guest

    My father gave me his gold watch, a 25 year old Omega analogue quartz.
    It had been lying idle in his drawer with the time-setting pin
    disengaged. After re-engaging the pin, the hands began advancing at 4
    times the normal rate. After 1 hour it has gained 3 hours. I assume
    the crystal is oscillating at a higher overtone, maybe due to a weak
    battery.

    In any case I now have a watch to match the reverse Dick Smith wall
    clock above my desk. Maybe I should start collecting misbehaving
    timepieces.

    - Franc Zabkar
     
  2. This might be normal behavior for the watch. You might have engaged a mode
    that moves the hands rapidly.

    Or not.
     
  3. cjt

    cjt Guest

    That's how you set my Tissot (an Omega brand, I believe).
     
  4. **When I was at tech (well, at the Department of Civil Aviation Training
    School, more correctly), a couple of guys decided that some of the electric
    (synchronous motor type) clocks required their special attention. They
    carefully stripped the clocks apart, removed the motors, then removed the
    reverse prevention thingys, reassembled the whole thing with a clock face,
    carefully printed in reverse.

    It was kinda nice watching the hands of the clock moving backwards.
     
  5. Polyp

    Polyp Guest



    To speed it up leave it on your wrist when using a hefty spot welder.....
     
  6. I have a watch that detects a quick twist of the crown and steps the
    hands around 12 indicated hours (in the appropriate direction) in
    about 3 seconds.

    4:1 just sounds annoying.


    Best regards,
    Spehro Pefhany
     
  7. N_Cook

    N_Cook Guest

    I (in the UK) once had to repair a bedside clock radio that was running hot
    and running slow. It was actually made for the USA and 110V / 60Hz that
    someone had put a UK plug on the mains cable. Not burnt up running at 240V
    but the 50Hz meant it was losing exactly 10 minutes an hour.

    My local has a few disguised clocks including a reverse one. I though about
    making one with a pointy-tooth eliptical gear and axially sprung loaded
    conical pinion so it would run alternately fast and slow each hour.
    There is a church near me that has a clock in the tower that is so old that
    it has only one hand, other not dropped off, minutes weren't needed prior to
    the railways coming in.
     
  8. Don McKenzie

    Don McKenzie Guest

    My Omega costs $35 a battery change.
    They give you a 2 year warranty, and they always run out in 26 months.

    Have seriously though of getting a $19.95 throw away watch, and flogging
    my engraved gold retirement Omega.

    Don...



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  9. My Omega costs $35 a battery change.
    You can purchase tools for opening the back of a watch. I've never paid
    anyone to change watch batteries.
     
  10. F Murtz

    F Murtz Guest


    I made a reverse clock years ago with a movement that I got from an
    electronics shop, still works and confounds people. I have been trying
    to get more of the movements recently but I am having no success.
     
  11. F Murtz

    F Murtz Guest


    Some of the old 240 volt ac clocks would go whichever way they were started
     
  12. And othres would reverse if you simply flipped the motor stator.

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  13. F Murtz

    F Murtz Guest

    Thanks, they are not far away from here
     
  14. Don McKenzie

    Don McKenzie Guest

    Thanks Bill,

    struth, so the cost for an Omega is really in the cost of the tools, not
    the battery?

    I know when it first went flat, I took it to one of the little arcade
    shops that do that sort of thing, and they couldn't get the back off,
    and all they managed to do was scratch it.

    So I had to take it to Cobblers Plus Watch Works, and they charged $35
    and gave a 2 year guarantee.

    Took it back 26 months later with the receipt, and they wanted to charge
    me the same, so I told them I was going to replace it with a junk watch,
    and they immediately dropped the price to $25.

    Where do you get the tools, and how much would you expect to pay?

    I don't want to be a jeweler, but at $35, when I know the battery could
    be purchased $35 a 100 from China, seems a little rich.

    Cheers Don...



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    Don McKenzie

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  15. Where do you get the tools, and how much would you expect to pay?

    I don't know what the Omega back is like -- it might require some special,
    hard-to-obtain tool -- so I can't give a definitive answer.

    The most-common backs use either a slotted ring -- which can often be
    removed with a pair of chain-nose pliars -- or a press-to-fit back, which is
    removed with a "case-back knife".

    The latter is simply a knife with a very thin blade. You simply press the
    knife into the seam, and twist a bit. (Well, that's the theory. It's
    sometimes a bit more difficult, and there is the chance of scracthing the
    back.)

    These are available from Zantech (http://www.zantechinc.com/store). They
    have all kinds of watch-repair equipment and supplies. You'll have fun
    browsing the site.

    You can get batteries even cheaper than that from Zantech and similar
    companies.

    Any jeweler who charges more than $5 for a battery replacement -- including
    the battery -- is gouging. Most batteries cost the dealer less than 25
    cents, and replacing one takes less than five minutes. That's a gross profit
    of more than $50 an hour. Not bad.
     
  16. L.A.T.

    L.A.T. Guest

    Let it run.
    When it has made up the time it missed when it wasn't running it will resume
    normal speed.
    Not many people know this.
     
  17. Don McKenzie

    Don McKenzie Guest

    yes, it appears that it does.

    thanks William,

    gee that seems a very slow site.

    Couldn't find anything apart from a knife for opening watches.

    Zantech are quoting on their pages $5 to $15.

    I wanted a calculator battery a few months back. The common CR-2032.
    Tried the little battery-clock shops at the local shopping centre. $9.95
    Checked DSE etc, $4 to $5.

    Bugger them, bought a bag load from Hong Kong for that sort of money. I
    think I got an assortment of 30 batteries for around $10, inc postage.
    http://www.wizard-from-oz.com/dx_2.html

    Still not sure what to do about my $35 battery problem when it arises in
    26 months time. :)

    Cheers Don...





    --
    Don McKenzie

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    Breakout, Prototype, Development, & Robotics Boards:
    http://www.dontronics-shop.com/sparkfun-electronics.html

    Coupon Specials:
    http://www.dontronics-shop.com/coupon-specials.html
     
  18. Very good. I got a chuckle out of that.
     
  19. terryc

    terryc Guest

    Also keep your eye open at $2.
    Also available from $2 shops around here (Our 'city' is infested with
    them).
     
  20. Tom

    Tom Guest

    I've stopped wearing watch about 20 years ago and never missesd it. Funyy thing I've bought a couple since then (I like nice watch) but they just sit in a drawer.

    Tom
     
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