Sennheiser HD 4.50 Motherboard Replacement

はじめに

This is a Sennheiser HD 4.50 Headphone motherboard repair guide. This guide is useful for users whose headphones are not properly functioning due to issues with the motherboard. The motherboard is the main control system for the headphone where all electrical connections run. A faulty motherboard could cause many problems to the headphones from volume issues all the way to complete headphone failure. If the users headphones seem to be experiencing electrical/technical issues, this guide is a good place to turn.

In Step 4 you will require you to remove wires that have been hot glued down to the motherboard. Make sure to use safe practices to ensure everything goes safely.

必要な工具と部品

手順1 Motherboard

Sennheiser HD 4.50 Motherboard Replacement, Motherboard: 手順 1、 3の画像 1

Sennheiser HD 4.50 Motherboard Replacement, Motherboard: 手順 1、 3の画像 2

Sennheiser HD 4.50 Motherboard Replacement, Motherboard: 手順 1、 3の画像 3

Locate the side designation on the headband-earpiece junction.
The motherboard is located on the right side.
Remove the right side ear pad.
Refer to the Ear Pad Removal guide for more guidance.

編集

手順2

Sennheiser HD 4.50 Motherboard Replacement: 手順 2、 3の画像 3

Use the Phillips #00 screwdriver to remove the four 10 mm screws holding the ear cup cover in place.
Use an opening tool to pry off the cover.

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手順3

Sennheiser HD 4.50 Motherboard Replacement: 手順 3、 3の画像 3

Use a Phillips #000 screwdriver to remove the four 6 mm screws holding the motherboard in place.

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手順4

Use tweezers to remove the hot glue that covers the wires
Using the tweezers, grasp and slowly pull away the wires from the motherboard until they disconnect.

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手順5

Use the iFixit opening tools to lift up on the motherboard.
While lifting up with the tool, grab and pull the motherboard with your free hand away from the button functions until it disconnects.
There may be some resistance in this step.