Introduction

We are going to remove the motherboard out of the Garmin Fenix 2 watch. You will need a Torx T9 screwdriver along with a nylon spudger for this fix.

Parts

No parts required.

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  • Use a Torx T9 screwdriver to remove these four .8mm screws and seperate the housing.

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  • Use a spudger tool to disengage the power ribbon from the main board. Once the ribbon is disconnected you can separate the bottom piece of the housing that holds the battery.

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Image 1/2: Despite the fact that the metal spudger is shown being used in this step, make sure to use a plastic opening tool or nylon spudger to pry up the battery. The metal spudger has a much larger chance of puncturing the battery, and thus should not be used. Image 2/2: Despite the fact that the metal spudger is shown being used in this step, make sure to use a plastic opening tool or nylon spudger to pry up the battery. The metal spudger has a much larger chance of puncturing the battery, and thus should not be used.
  • Use the spudger tool again and wedge it in between the battery and the housing, pry until the battery starts to separate from the adhesive holding it in place. Once you have the battery disconnected you are ready to replace it.

    • Despite the fact that the metal spudger is shown being used in this step, make sure to use a plastic opening tool or nylon spudger to pry up the battery. The metal spudger has a much larger chance of puncturing the battery, and thus should not be used.

I am looking at the battery you suggested on eBay, and it appears that there are wires attached to it. Exactly where do these wires connect? Do they require soldering in place somewhere?

Jamie - Reply

Good information, but :

- spudger not really needed, nail is enough.

- missing the one regarding the need for a soldering iron ! The old battery needs to be unsoldered and the new one soldered to the inside wiring. Not so difficult but soldering iron needed !

Got a spare battery on eBay (vendor is http://akku-wechsel.de). Delivery was very fast. After replacement I went from 6~8 hours life to 3~4 weeks :) So happy with the upgrade !

Pierre Colin - Reply

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  • Use a spudger to pry open the power ribbon from the main board.

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Image 1/1:
  • Use your Torx T9 screwdriver to remove the one .8mm screw that holds the main board to the watch housing.

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  • Use the spudger to pry the motherboard out of the housing.

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  • Once removed simply separate the digitizer from the main board.

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  • Lastly use your spudger tool to pry the data ribbon open from the motherboard. Once the ribbon is removed the board will be free and you can replace the board.

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Conclusion

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

3 other people completed this guide.

Brandon Barger

Member since: 02/13/2016

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Team

IUPUI, Team 54-4, Wilson Spring 2016 Member of IUPUI, Team 54-4, Wilson Spring 2016

IUPUI-WILSON-S16S54G4

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2 Comments

Ottima, le prime guide che trovo per Garmin Fenix 2. Io metterei una foto con le specifiche della batteria. Saluti.

Ciro Filomeno - Reply

Hi there, any idea where I can buy motherboard replacement for my Fenix 1?

hasmanizam - Reply

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