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  1. #11
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    lolypop000's Avatar
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    Today i recived nuvi 3790 with broken screen

    I take board from 3790 and add it in 3490 unit and i have now working nuvi

    Here is pictures like i promised

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  3. #12
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    catymag's Avatar
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    Report about accuracy please
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    Nuvi1250/Nuvi 34xx/Nuvi 2200/Nuvi 66/Oregon 600/Galaxy S5 MM 6.0.1/TomTom GO/iGO Nextgen Avic,Basar,Isr.Gift/Navigon
    Please don't flood my pm box with questions you can post on forum!! You won't hear back from me.

  4. #13
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    Now when is still 3790 is about 23 meters but we have bad weather.
    I charge now battery and then i will modified it in 3490

    Will report accuracy

    When i will have more time i will also try to take board with GPS chip from 3490 and add it in this nuvi.
    For change GPS board i must resolder wire that is visible on picture 5.

    p.s.
    3790 and 3490 have the same number on GPS chip.
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  5. #14
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    Lolypop000,
    I have the same problem like you with a 3490 and tried to connect 3790's PCB to 3490's LCD and touch screen, but I cannot because it has different connectors not like 3790's and I cannot connect 3790's PCB to 3490's LCD and touch screen.
    Last edited by bobokom; 12th April 2014 at 06:16. Reason: Mistake.

  6. #15
    Navigation software expert

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    I don't know why you don't have the same connectors i have the same.

    Do you have some picture of your board and flat cable of screen?
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  7. #16
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    Here are the pictures of PCB of 3490 and 3790.
    Attached Images Attached Images

  8. #17
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    3490 PCB is on the right of the first photo and 3790 is on the left side.

  9. #18
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    I have on 3490 and 3790 blue board.

    Maybe Giomen know why you have green board on 3490.
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  10. #19
    Important User Alviora's Avatar
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    3490 connectors - are incompatible with 3790.
    only transient (hybrid) models are compatible with each other.
    color psb in 3760 - blue, in 3490 - green - but there are exceptions.

    I have a transitional model - 3490 - but the display from 3790 and gps chip mt3328 not nl5500 -and positioning accuracy of about 5-9 meters
    Last edited by Alviora; 20th February 2014 at 22:04.
    Обожаю смотреть как русскоязычные пользователи общаются между собой на англоязычных ресурсах..

  11. #20
    Navigation software expert

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    @Caty

    After transformation from 3790 to 3490 accuracy is 7-12 meters
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