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If your Edifier W820NB Plus will not charge or turn on, a faulty battery may be the cause. This guide will walk you through how to replace it. Be careful while removing the old battery. If punctured it could be quite dangerous. Make sure to take the old battery to a recycling center. Old batteries cannot be thrown away with regular trash.
This guide requires soldering. If you're unfamiliar with soldering, review the How to Solder and Desolder Connections guide and take appropriate precautions before beginning.
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Start with the headphones face up and the earpads visible.
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Hold the driver housing in one hand and insert an opening tool into the seam between the earpad and driver housing.
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With your inserted opening tool, pry around the perimeter of the ear pad until it fully releases.
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Repeat for the other side if necessary.
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Identify the driver you wish to replace.
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Remove all five 5 mm Phillips #0 screws that secure the driver assembly.
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Insert a Jimmy in the seam between the driver assembly and driver housing.
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Rotate the Jimmy along the entire perimeter of the innermost edge to pry it out of place.
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Gently remove the driver assembly from the rest of the headphone, with care not to strain the connected wire.
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Repeat the procedure for the other driver if necessary.
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Desolder the four driver connections from the motherboard.
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Remove the driver assembly.
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Use an iFixit Opening Tool to gently pry off the battery.
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Desolder the battery connections.
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To reassemble your device, follow the above steps in reverse order.
For optimal performance, after completing this guide, calibrate your newly installed battery.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.
To reassemble your device, follow the above steps in reverse order.
For optimal performance, after completing this guide, calibrate your newly installed battery.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.
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