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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.

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

  2. Carefully lift the face off the watch base.
    • 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.

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

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  5. Set the watch face aside.
    • Set the watch face aside.

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

  7. Carefully remove the antenna, and set it aside.
    • Carefully remove the antenna, and set it aside.

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

  9. 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.
    • 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.

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

Conclusión

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

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