Samsung Galaxy Watch4 Classic Motherboard Replacement

Written By: Adriana Zwink
  • Comments: 6
Samsung Galaxy Watch4 Classic Motherboard Replacement

Difficulty

Moderate

Steps

10

Time Required

10 - 20 minutes

Introduction

Use this guide to replace the motherboard on your Samsung Galaxy Watch4 Classic.

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    • Before starting repairs, take your watch off the charger and power it down.

    • Remove the watch band.

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    • Use a Tri-point Y00 screwdriver to remove the four 4.0 mm-long screws securing the back cover.

    The y000 screw driver is not right. Tip is too long and doesn't engage screw correctly causing them to strip

    Christopher W Warnecke -

    I found I needed to use a Y00 screw for this.

    RashKash103 -

    Confirmed the Y00 is what you need for this step.

    drenizzle -

    Yea, it stripped my screws, now i cant replace my battery i have to buy a whole new watch Y000 is false news

    Randal Jones -

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    • Insert an opening tool into the seam between the back cover and the metal housing.

    • Twist the opening tool to create a gap.

    • Don't try to remove the back cover all the way yet. The sensor flex cable is still connected to the motherboard.

    I suggest to work the plastic pry tool between one of the pairs of spurs that hold the wrist bands on. It worked much more easily for me than working at either side of the watch. ~Rufus T. Montgomery

    Rufus T. Montgomery -

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    • Lay the watch face down.

    • Carefully swing open the back cover by folding it to the opposite site of the created gap.

    • Use the flat end of a spudger to pry up and disconnect the sensor flex cable from the motherboard.

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    • Remove the back cover.

    • Make sure the rubber gasket is undamaged. If damaged, replace it with a new one during reassembly to maintain proper water resistance.

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    • Use the pointed end of a spudger to disconnect the hall sensor flex cable.

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    • Use a spudger to disconnect the display flex cable.

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    • Use a spudger to disconnect the crown button flex cable.

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    • Use a Phillips screwdriver to remove the 4.4 mm-long screw securing the motherboard.

    what size Phillips head?

    Angela -

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    • Use your fingers to lift the motherboard out from the watch assembly towards the bottom of the watch.

    • During reassembly, make sure none of the flex cables become trapped underneath the motherbaord.

Conclusion

If possible, turn on your device and test your repair before resealing.

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

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

Author

Adriana Zwink

Member since: 18/12/19

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