ATO Kundo Kundo ATO

Discussion in 'Electric Horology' started by Phantom2, Dec 19, 2017.

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  1. Phantom2

    Phantom2 New Member

    Dec 18, 2017
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    Phantom2 said:
    I am new to the forum and new to clock repair. Just acquired a Kundo Electronic and it appears the motor is not working . It is the older style with all electronics inside the motor. Can anybody help me either find a good used motor or someone who can repair this one. thanks and i'm looking forward to future discussions about unusual clocks.
     
  2. JTD

    JTD Registered User

    Sep 27, 2005
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    When I suggested you move your request to Electric Horology, I meant start a new thread in that section. Your clock is a Kundo, nothing to do with Junghans ATO, which is where your post is hidden now. No one will look for it under the Junghans-Ato heading.

    Start a new thread.

    JTD
     
  3. Phantom2

    Phantom2 New Member

    Dec 18, 2017
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    I am new to the forum and new to clock repair. Just acquired a Kundo Electronic clock and it appears the motor is not working . It is the older style with all electronics inside the motor. Can anybody help me either find a good used motor or someone who can repair this one. thanks and i'm looking forward to future discussions about unusual clocks.
     
  4. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    #4 roughbarked, Dec 20, 2017
    Last edited: Dec 20, 2017
    The first thing to do is level the clock so that the point at the bottom of the pendulum sits precisely over the mark at the centre on the coil. Check to see if this helps the clock run. If the clock appears to work but still won't run, then maybe the wires from the battery to the coil need to be replaced. Some of the more modern Kundo's had an external circuit for providing the impulse but the older ones had a built in transistor in the coil unit that eventually failed over time.
    OK. Now the Kundo usually requires an antiquated germanium transistor to be rewired into the coil unit if the coil tests with resistance but provides no impulse. This can be done but the germanium transistors are not easily found so alternative methods may be required. Kundo Electronique Repair

    Here is where I start to marry your Kundo back with the Junhans ATO which actually used the same movement.
    Watch this video and pay careful attention to how he solved the impulse issue.
    Now read this post. Junghans, ATO.. and see that Junghans used a built in switch just like the one the bloke in the video cobbled together.

    Industrial Alchemy - Transistors and Diodes
     
    rudiedog likes this.
  5. rudiedog

    rudiedog Registered User

    Nov 12, 2013
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    Thanks roughbarked for posting that video! I am going to have to use his solution on my clock. It seems a fairly good, noninvasive way to get these clocks going again. Electricity is not my thing but I think I can do this.
     
  6. roughbarked

    roughbarked Registered User

    Dec 2, 2016
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    Let us know how
    Let us know how you go with it.
     

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