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Garmin Fenix 3 Motherboard Replacement

Introducción

Even the best electronics die out over time, especially devices used in harsh conditions. This guide will show how to replace the motherboard of your Garmin Fenix 3 if the electronics are showing signs of failure. You will need a T6 Torx screwdriver, a T5 Torx screwdriver, and a spudger.

Qué necesitas

  1. Garmin Fenix 3 Motherboard Replacement, Display Assembly: paso 1, imagen 1 de 2 Garmin Fenix 3 Motherboard Replacement, Display Assembly: paso 1, imagen 2 de 2

    • Use a T6 screwdriver to remove the five 1.7 mm screws from the watch face.

    Traducir

  2. Garmin Fenix 3 Motherboard Replacement: paso 2, imagen 1 de 1

    • Carefully lift the face off the watch base.

    • Do not yank the face. A ribbon connector connects the face and the motherboard, and yanking could result in damage to the motherboard or ribbon.

    Traducir

  3. Garmin Fenix 3 Motherboard Replacement: paso 3, imagen 1 de 1

    • Use a spudger to lift up and free the screen ribbon cable's press-fit connector from the motherboard.

    Traducir

  4. Garmin Fenix 3 Motherboard Replacement: paso 4, imagen 1 de 1

    • Set the watch face aside.

    Traducir

  6. Garmin Fenix 3 Motherboard Replacement, GPS Antenna: paso 5, imagen 1 de 1

    • Locate the antenna, which is located on the motherboard.

    Traducir

  7. Garmin Fenix 3 Motherboard Replacement: paso 6, imagen 1 de 1

    • Carefully remove the antenna, and set it aside.

    Traducir

  8. Garmin Fenix 3 Motherboard Replacement, Motherboard: paso 7, imagen 1 de 3 Garmin Fenix 3 Motherboard Replacement, Motherboard: paso 7, imagen 2 de 3 Garmin Fenix 3 Motherboard Replacement, Motherboard: paso 7, imagen 3 de 3
    Herramienta utilizada en este paso:
    Tweezers
    $4.99
    Comprar

    • Locate the two silver 1.4 mm T5 screws, and carefully unscrew them.

    • To avoid losing or dropping the screws once they are loose, use tweezers to extract them.

    Traducir

  9. Garmin Fenix 3 Motherboard Replacement: paso 8, imagen 1 de 2 Garmin Fenix 3 Motherboard Replacement: paso 8, imagen 2 de 2

    • Lift the watch and turn it over one hand. The motherboard should fall out easily.

    • When reinserting your motherboard, slide it in instead of pressing it. The motherboard must go beneath a lip at the base of the watch body.

    Traducir

  10. Garmin Fenix 3 Motherboard Replacement: paso 9, imagen 1 de 1

    • Using the spudger, separate the motherboard from the battery, which are both held together with a mild adhesive.

    Traducir

  11. Garmin Fenix 3 Motherboard Replacement: paso 10, imagen 1 de 1

    • Motherboard without metal cover

    Traducir
Conclusión

To reassemble your device, follow these instructions in reverse order.

6 personas más completaron esta guía.

16 comentarios

Hello,

i’m looking for replacement of start/stop button micro switch. Do you know what is the switch number which i can look for?

Thank you

Jan Stefan - Contestar

that's my problem too and i can't find any solution.

Hamidmonti -

How did you remove the metal cover from the moterboard (last picture)

slowrun - Contestar

Where can I find a replacement Motherboard ? None of my buttons are responding and I can’t even do a Factory reset.

All that works is switching off and back on.

arnaud.lhote - Contestar

I have exact same issue. I sent my watch to official repair service to Split (Croatia) and they said they aren’t able to fix it. I can see only main screen of the watch, buttons don’t respond at all. Would like to know how to fix the issue.

ilija.veselica -

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