Wall Clock internal problem

Discussion in 'Technical Repair' started by Abhinavrajan, Sep 5, 2016.

  1. Abhinavrajan

    Thread Starter Member

    Aug 7, 2016
    77
    1
    I have a wall clock in my home. Which just requires a 5V AA battery to run.
    Unfortunately, It doesn't work even when I insert the battery with proper polarity.

    What might be the problem with my clock ?
    Please help.
     
  2. SLK001

    Well-Known Member

    Nov 29, 2011
    820
    229
    It's broken?
    Your battery isn't as good as you think?
    Your clock battery terminals are corroded?
    It's an atomic clock and you aren't receiving a signal in India?
     
  3. Abhinavrajan

    Thread Starter Member

    Aug 7, 2016
    77
    1
    The battery is fine. Its new.
    The clock is also good.
    The terminals are also clean and neat.

    I didnt understand the last question. Could u explain the concept behind the last question?
    Please.
    Thanks.
     
  4. absf

    Senior Member

    Dec 29, 2010
    1,493
    372
    Is your clock digital or analog?
     
  5. Abhinavrajan

    Thread Starter Member

    Aug 7, 2016
    77
    1
    Analog
     
  6. absf

    Senior Member

    Dec 29, 2010
    1,493
    372
    Then I think you need to replace the movements...

    Clock_Movement_cropped.jpg

    clock movement_inside.png

    Allen
     
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  7. AlbertHall

    Well-Known Member

    Jun 4, 2014
    1,951
    387
    If these three are all true then the clock works when the battery is correctly inserted.
    If the clock doesn't work then at least one of these is not true.
     
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  8. crutschow

    Expert

    Mar 14, 2008
    13,024
    3,236
    An AA battery is 1.5V, not 5V.
    If you applied 5V it would likely zap the clock circuits.
     
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  9. Abhinavrajan

    Thread Starter Member

    Aug 7, 2016
    77
    1
    Yeah my bad! Its 1.5V
     
  10. crutschow

    Expert

    Mar 14, 2008
    13,024
    3,236
    If you are not being facetious, that wont keep the clock from running, it just won't keep the exact time.
    The "atomic" clock typically receives the time signal once a day in the early morning hours to correct any errors in the crystal oscillator from the previous 24 hours.
     
  11. AlbertHall

    Well-Known Member

    Jun 4, 2014
    1,951
    387
    Not necessarily. I have one which resets the hands to 12 o'clock and waits for the radio signal - no signal, no movement.
     
  12. SLK001

    Well-Known Member

    Nov 29, 2011
    820
    229
    Mine are all like this. I keep thinking, "Why the heck isn't this clock working..." then the next day all is okay.
     
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