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Introduction

This tutorial demonstrates how to swap out the Sony WF-1000XM3 earphones' main board. The main board might be affected if, after testing and swapping out other parts like the speaker or battery, the earphones still don't turn on. Damage to its tiny parts, either mechanical or electrical, may be the cause of this problem. It takes patience and a reasonable level of technical expertise to replace the main board.

Before you begin this repair, make sure your earbuds are turned off and you remove the batteries.

Caution: This repair requires soldering to remove the main board. For instructions and safety tips on soldering and desoldering, review this guide.

What you need

Step 1 Earbud Battery

Sony WF-1000XM3 Main Board Replacement, Earbud Battery: step 1, image 1 of 2

Sony WF-1000XM3 Main Board Replacement, Earbud Battery: step 1, image 2 of 2

Use a spudger to gently pry open the back plate of the earbud.

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Step 2

Sony WF-1000XM3 Main Board Replacement: step 2, image 3 of 3

Use a Phillips #000 screwdriver to remove the two 4 mm screws securing the internal components.
Both sides of the earbuds are attached with a ribbon cable. Separate the two halves carefully to prevent tearing the cable.

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Step 3

Use a spudger to carefully remove the battery from the earbud's circuit board.
When replacing the battery, make sure to keep the same orientation as the old battery and reconnect the battery to the circuit board.

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Step 4

Sony WF-1000XM3 Main Board Replacement: step 4, image 3 of 3

Use a spudger to pry the battery and the metal negative contact from the earbud.
The battery and the negative contact are secured with double-sided tape, so it may take some force to remove them.

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Step 5

Sony WF-1000XM3 Main Board Replacement: step 5, image 3 of 3

Remove the metal negative terminal from the battery.
Attach it to the new battery, either with double-sided tape or by placing the new battery and the terminal back into the earbud in the same position they were before.

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Step 6 Main Board

Sony WF-1000XM3 Main Board Replacement, Main Board: step 6, image 1 of 3

Sony WF-1000XM3 Main Board Replacement, Main Board: step 6, image 2 of 3

Sony WF-1000XM3 Main Board Replacement, Main Board: step 6, image 3 of 3

Use the spudger and tweezers to remove the small connectors that hold the main board in place.
If your device contains soldered components, carefully desolder them with the soldering iron.
Gently remove the main board.