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Follow this guide to replace the motherboard on the Sony WH-1000XM4 wireless headphones.
Ensure the headphones are powered off and discharged.
As a precaution utilize the antistatic wrist strap to avoid damaging any of the electronic components.
You will need solder to reassemble.
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Place your headphones onto a work surface, ear pads facing up.
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Use your thumb to depress the LEFT ear pad near the long outer edge, creating a gap between the cushion and the frame.
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Pivot the spudger down to unclip the long edge of the ear pad.
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Repeat around the perimeter of the ear pad until it is loose.
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Remove the foam liner from the left ear cup's speaker.
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Use a Phillips #00 screwdriver to remove the four 8.4 mm screws securing the left ear cup cover.
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Flip the headphones over, ear cups facing down.
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Use your fingers to lift up and flip over the left ear cup cover.
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Unscrew the 4 screws in the corners of the motherboard to loosen it from the left ear cup assembly.
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Carefully remove the cable ribbon from the bottom of the motherboard.
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Carefully remove the multipin connector (multiple colorful wires) from the side of the motherboard.
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Carefully lift the motherboard out from the ear cup to access the other cable ribbons and connectors.
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Remove wires from the side or bottom of the motherboard that are attached by pin connectors.
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Desolder the remaining wires that are attached to the motherboard.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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