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Over time or with overuse, batteries can become corroded. If you notice the battery life decreasing significantly or possibly a strange smell coming from the Sony WH-CH520, it could mean it's time for a battery change. Replacing a battery requires being able to handle tools in small electronics and soldering experience.
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Lay headphones flat against the surface with the ear cushions oriented upwards.
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Pinch the cushion of the right labeled headphone near the edge of the device to carefully pull the cushion off.
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Remove the three 2.5 mm screws from the headphones using a JIS #00 screwdriver.
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Place one end of an opening tool against the edge of the base with the hook-like side pushing up against the covering.
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Carefully pull the tool down against the edge to lift the covering.
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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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Carefully remove the film adhesive on top of the battery using a pair of tweezers.
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Carefully pry the battery up and off of its adhesive using a spudger.
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Find the wires connecting the motherboard to the battery.
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Using a soldering iron, carefully desolder the red and black wires from the motherboard and replace with the new battery and wires.
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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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UMass Dartmouth, Team 2-2, Konn Fall 2024 crwdns2935289:0UMass Dartmouth, Team 2-2, Konn Fall 2024crwdne2935289:0
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