1. Unscrew the four 3.4 mm flat head screws Unscrew the four 3.4 mm flat head screws
    • Unscrew the four 3.4 mm flat head screws

  2. Carefully lift the back plate off the watch. You will notice a lithium battery and rubber gasket attached to the back plate.
    • Carefully lift the back plate off the watch. You will notice a lithium battery and rubber gasket attached to the back plate.

  3. If not replacing lithium battery, skip down two steps.
    • If not replacing lithium battery, skip down two steps.

    • Using the plastic removal tool, pry the battery from the backing plate. The battery is simply attached with glue.

  4. Desolder the battery connections from the motherboard. Learn how to solder components here!
    • Desolder the battery connections from the motherboard. Learn how to solder components here!

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  6. Use PH00 screw driver to remove two 2.4mm Phillips head screws.
    • Use PH00 screw driver to remove two 2.4mm Phillips head screws.

  7. Use a spudger or tweezers to remove a white sticker that covers a Phillips head screw.
    • Use a spudger or tweezers to remove a white sticker that covers a Phillips head screw.

  8. Use PH00 screwdriver to remove 5.2mm Phillips head screw
    • Use PH00 screwdriver to remove 5.2mm Phillips head screw

  9. Use ESD safe tweezers to remove the gold ribbon cable. This will expose a second 5.2mm Phillips head screw that can be removed with a PH00 screwdriver. This will expose a second 5.2mm Phillips head screw that can be removed with a PH00 screwdriver.
    • Use ESD safe tweezers to remove the gold ribbon cable.

    • This will expose a second 5.2mm Phillips head screw that can be removed with a PH00 screwdriver.

  10. Use a spudger to gently pry on the motherboard towards the top of the watch, being towards the 12 o'clock position to loosen the motherboard. You can now access the parts and pieces on the bottom of, and below the motherboard.
    • Use a spudger to gently pry on the motherboard towards the top of the watch, being towards the 12 o'clock position to loosen the motherboard.

    • You can now access the parts and pieces on the bottom of, and below the motherboard.

  11. Locate the four main soldering points marked in red.
    • Locate the four main soldering points marked in red.

    • Be aware of the five additional soldered pins marked by the blue arrow.

  12. Begin to desolder the points pointed out in the last step. Use the soldering wick to help remove the solder. Use the soldering wick to help remove the solder.
    • Begin to desolder the points pointed out in the last step.

    • Use the soldering wick to help remove the solder.

Conclusion

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

One other person completed this guide.

Michael Miller

Member since: 10/24/2016

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2 Guides authored

Team

IUPUI, Team 3-3, Baechle Fall 2016 Member of IUPUI, Team 3-3, Baechle Fall 2016

IUPUI-BAECHLE-F16S3G3

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One Comment

I want to know that what I have to do if want to replace the lithium battery with usb direct powered device.

amupis232389 - Reply

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