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Introduction

Over time, one of the speakers in the Sony WH-CH520 headphones may become damaged through typical wear and tear. If this happens, the options for repair are constrained to replacing the speaker itself. If this is the case follow this guide to replace one of the speakers. To successfully complete this guide you will need amateur-level skills in soldering.

What you need

Step 1 Speaker Driver

Sony WH-CH520 Speaker Driver Replacement, Speaker Driver: step 1, image 1 of 3

Sony WH-CH520 Speaker Driver Replacement, Speaker Driver: step 1, image 2 of 3

Sony WH-CH520 Speaker Driver Replacement, Speaker Driver: step 1, image 3 of 3

Lay headphones flat against the surface with the ear cushions oriented upwards.
Pinch the cushion near the edge of the device to carefully pull the cushion off.

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Step 2

Remove the three 2.5 mm screws from the headphones using a JIS #00 screwdriver.

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Step 3

Sony WH-CH520 Speaker Driver Replacement: step 3, image 3 of 3

Place one end of an opening tool against the edge of the base with the hook-like side pushing up against the covering.
Carefully pull the tool down against the edge to lift the covering.
Move the tool to different spots around the base of the headphones to pry it up until the covering comes off.

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Step 4

Use a soldering iron to desolder the two connections where the exposed wires meet the speaker contact.
Pull the wire away from the speaker to remove it while the solder melts. Do this for both wires.
Disconnect the wires from the speaker driver, and you will be able to replace the old driver with the new one using the same wires.