Sony WH-CH520 Severed Wire Repair

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This guide is intended to help you reattach a severed headphone on Sony WH-CH520 wireless headphones using a soldering iron.

Before reattaching your headphone, you should verify that the sound is still working and the connecting wire is free of physical damage. This guide includes soldering; take caution while working with a heated soldering iron and melting materials.

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Plug in the soldering iron, allowing it time to heat to 480 degrees Fahrenheit.

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Gently feed the wire back into the headband piece of the headset.

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Seat the headphone back into the headset, making sure to keep it angled in the desired direction.

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Apply the soldering tip around the circumference where the headphone and headset meet, allowing the tip to rest for about one second in each area it touches.
Soldering involves using a high degree of heat. Avoid touching the soldering tip or the melted materials as they cool.

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