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Introdução

If the Edifier W820NB Plus will not connect despite being on and in pairing mode, a broken motherboard may be the issue. The motherboard is the component that controls most functions of the headphones including connecting to other devices. Make sure to try connecting to a few different devices before resorting to motherboard replacement.

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.

O que você precisa

Passo 1 Ear Pads

Edifier W820NB Plus Motherboard Replacement, Ear Pads: passo 1, imagem 1 %32

Start with the headphones face up and the earpads visible.

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Passo 2

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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Passo 3

With your inserted opening tool, pry around the perimeter of the ear pad until it fully releases.
Repeat this procedure for the other side if necessary.

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Passo 4

Repeat for the other side if necessary.

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Passo 5 Drivers

Edifier W820NB Plus Motherboard Replacement, Drivers: passo 5, imagem 1 %32

Identify the driver you wish to replace.
This guide will use the left driver as an example but the same steps can be mirrored when replacing or removing the right driver. The battery is under the left driver, while the motherboard and daughterboard are under the right driver.

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Passo 6

Remove all five 5 mm Phillips #0 screws that secure the driver assembly.

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Passo 7

Edifier W820NB Plus Motherboard Replacement: passo 7, imagem 3 %32

Note that the wires for the drivers are on the outermost edge. Try to avoid pushing or cutting them when taking the driver out.
Insert a Jimmy in the seam between the driver assembly and driver housing.
Rotate the Jimmy along the entire perimeter of the innermost edge to pry it out of place.

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Passo 8

Gently remove the driver assembly from the rest of the headphone, with care not to strain the connected wire.

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Passo 9

Skip this step if you are completing a battery replacement.
Repeat the procedure for the other driver if necessary.
Desolder the four driver connections from the motherboard.
Remove the driver assembly.

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Passo 10 Motherboard

Edifier W820NB Plus Motherboard Replacement, Motherboard: passo 10, imagem 1 %32

Edifier W820NB Plus Motherboard Replacement, Motherboard: passo 10, imagem 2 %32

Peel off the black strip stuck to the top of the motherboard.

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Passo 11

Edifier W820NB Plus Motherboard Replacement: passo 11, imagem 3 %32

Remove the four 2 mm screws that secure the motherboard with a Phillips #0 screwdriver.

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Passo 12

Pull the motherboard out.
Desolder all motherboard connections.

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Conclusão

To reassemble your device, follow the above steps in reverse order.
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.