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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.
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Use a T6 screwdriver to remove the five 1.7 mm screws from the watch face.
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Carefully lift the face off the watch base.
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Use a spudger to lift up and free the screen ribbon cable's press-fit connector from the motherboard.
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Locate the antenna, which is located on the motherboard.
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Carefully remove the antenna, and set it aside.
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Locate the two silver 1.4 mm T5 screws, and carefully unscrew them.
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Lift the watch and turn it over one hand. The motherboard should fall out easily.
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Using the spudger, separate the motherboard from the battery, which are both held together with a mild adhesive.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Appalachian State University, Team S1-G3, Menagarishvili Fall 2018 crwdns2935289:0Appalachian State University, Team S1-G3, Menagarishvili Fall 2018crwdne2935289:0
APSU-MENAGARISHVILI-F18S1G3
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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
that's my problem too and i can't find any solution.
How did you remove the metal cover from the moterboard (last picture)
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.
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.
