Samsung Galaxy Watch Motherboard Replacement Repair Guide

Difficulty

Moderate

Steps

12

Time Required

                          35 - 50 minutes            

Sections

3

• Opening the Galaxy Watch
• 5 steps
• Core Assembly Removal
• 2 steps
• Motherboard
• 5 steps

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Introduction

What you need

Step 1

              Opening Procedure               

• Remove the four Tri-point #00 screws (4.2 mm length) on the backside of the watch.

Remove the four Tri-point #00 screws (4.2 mm length) on the backside of the watch.

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Step 2

• Use an opening tool to get between the back cover and the metal housing of the watch.
• Carefully pry the plastic back cover open.
• Don’t remove the back cover yet. There is a flex cable running to the core assembly inside.

Use an opening tool to get between the back cover and the metal housing of the watch.

Carefully pry the plastic back cover open.

Don’t remove the back cover yet. There is a flex cable running to the core assembly inside.

Step 3

• Lay down the watch and lift the back cover to access the sensor connector on the motherboard.

Lay down the watch and lift the back cover to access the sensor connector on the motherboard.

Step 4

• Use a spudger to disconnect the sensor flex cable from the motherboard.

Use a spudger to disconnect the sensor flex cable from the motherboard.

Step 5

• Remove the back cover.
• When closing the watch make sure the rubber gasket is undamaged or replace it with a new one.

Remove the back cover.

When closing the watch make sure the rubber gasket is undamaged or replace it with a new one.

Step 6

              Core Assembly Removal               

• Use a spudger to disconnect the display flex cable from the motherboard.

Use a spudger to disconnect the display flex cable from the motherboard.

Step 7

• Lift the core unit out of the housing.
• The core’s plastic frame sits tight inside the housing.
• Carefully thread the display flex cable through the gap of the core’s plastic frame.

Lift the core unit out of the housing.

The core’s plastic frame sits tight inside the housing.

Carefully thread the display flex cable through the gap of the core’s plastic frame.

Step 8

              Motherboard               

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

Use a spudger to disconnect the hall sensor flex cable.

Step 9

• Use a pair of tweezers to gently peel both button cables from the plastic frame.

Use a pair of tweezers to gently peel both button cables from the plastic frame.

Step 10

• Remove the single Phillips #00 screw (3.4 mm length).

Remove the single Phillips #00 screw (3.4 mm length).

Step 11

• Insert a spudger into the small gap underneath the motherboard where the cutout in the plastic frame is.
• Lift the motherboard by twisting the spudger.
• Slide the motherboard out from under the plastic tab.

Insert a spudger into the small gap underneath the motherboard where the cutout in the plastic frame is.

Lift the motherboard by twisting the spudger.

Slide the motherboard out from under the plastic tab.

Step 12

• Remove the motherboard.

Remove the motherboard.

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

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

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

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

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                                                                                      6 other people completed this guide.                                             

Author

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                    Tobias Isakeit                     

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lorne serpa - Sep 24, 2019

Reply

Anyone know where to purchase a Galaxy Watch mother board?

Nick Henthorn - Jul 11, 2020

Reply

What is the part number, or where can you get the motherboard?

Mohammed Aamir - Jul 18, 2020

Reply

Where can the motherboard be purchased from for Galaxy Watch ?

Agris Jurjans - Dec 1, 2020

Reply

I got a motherboard on ebay. Including import duties it was something like 90$. Shipped to Denmark.

Definitely cheaper than repair shop and absolutely more fun! :)

BRazvy - Jul 27, 2021

Reply

Hello,

Do you know if switching a motherboard from a GW46 Bluetooth only (R800) to a GW46 LTE (R805) is a straight swap or additional parts are needed?

As my R800 sensors are dead and i need to replace the motherboard and the back cover anyway.

Thanks