Samsung Galaxy Tab S3 Daughterboard Replacement

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Introduction

This guide will show the process behind replacing a daughterboard in the Samsung Galaxy Tab S3. This will be useful for fixing a broken charging port, as the port is soldered onto the daughterboard. It would also be useful if the home button, auxiliary, charging port and left speaker simultaneously stopped working, as these components all filter communications through the daughterboard to the motherboard for processing.

What you need

Step 1 Display

Samsung Galaxy Tab S3 Daughterboard Replacement, Display: step 1, image 1 of 1

To soften the adhesive holding the tablet together, heat up the edges of the glass panel using a heated iOpener on the edge of the device. Alternatively you can use a heat gun to loosen the adhesive.
Leave the iOpener on edge for two minutes.
Be careful not to burn yourself while handling the hot iOpener. For more information on the iOpener, use the iOpener Instructions Guide.

Step 2

Place a suction cup near edge that you heated up with the iOpener.
Press down on the suction cup to create a seal, and pull up with force to create a separation between the display and the midframe.
Use an opening tool to split apart the glass panel from the midframe.
Be careful to not break the glass when prying from the frame.

Step 3

Tool used on this step:

Plastic Cards

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As you continue along the edge using the opening tool, use a plastic card to keep the glass separate from the midframe.
You can also use multiple opening picks instead of a plastic card.

Step 4

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Pull off the glass panel using the suction cup.
As you remove the glass panel, be careful not to tear the ribbon connecting the motherboard to the display.
Carefully disconnect the ribbon cable connecting the display assembly to the motherboard. You can disconnect this ribbon from either end.

Step 5 Rear glass panel

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Samsung Galaxy Tab S3 Daughterboard Replacement, Rear glass panel: step 5, image 2 of 2

Repeat steps 3 through 7 to remove the rear glass panel on the opposite side of the device.

Step 6 Battery

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Samsung Galaxy Tab S3 Daughterboard Replacement, Battery: step 6, image 2 of 2

Use a Phillips #000 screwdriver to unscrew the five screws securing the battery, and the twenty-two screws surrounding the midframe.

Step 7

The midframe should snap off from the device’s motherboard.

Step 8

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Locate the ribbon running from the midframe and disconnect it from the motherboard with the flat end of a spudger.

Step 9

Use the flat end of the spudger to pop off the connector between the battery and the motherboard.

Step 10

Flip the midframe over and pop the battery out, making sure to slide it out from underneath the ribbon cables.

Step 11

The battery should now be removed and detached from the device.

Step 12 Daughterboard

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Samsung Galaxy Tab S3 Daughterboard Replacement, Daughterboard: step 12, image 2 of 3

Samsung Galaxy Tab S3 Daughterboard Replacement, Daughterboard: step 12, image 3 of 3

Use a spudger to pry up four press fit connectors from the lower board containing the charging port.

Step 13

Samsung Galaxy Tab S3 Daughterboard Replacement: step 13, image 3 of 3

Pry up the two coaxial cables joining the daughterboard to the motherboard.
Be sure to pull the white coaxial cable from the small bracket holding the wire to the daughterboard before removal.