Disassembling Over-Ear Headphone Sennheiser HD4199

Introduction

By far the most common fault with headphones is a broken lead or cushion. If the break is within the headphones themselves or at that end of the lead you will need to disassemble them in order to replace the lead or shorten it to eliminate the break.

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Étape 1 Disassembling Over-Ear Headphone Sennheiser HD4199

Disassembling Over-Ear Headphone Sennheiser HD4199, Disassembling Over-Ear Headphone Sennheiser HD4199: étape 1, image 1 de 3

Disassembling Over-Ear Headphone Sennheiser HD4199, Disassembling Over-Ear Headphone Sennheiser HD4199: étape 1, image 2 de 3

Disassembling Over-Ear Headphone Sennheiser HD4199, Disassembling Over-Ear Headphone Sennheiser HD4199: étape 1, image 3 de 3

Use two or three fingers slowly pull the cushion.
Caution: go gently and try not to apply too much force.

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Étape 2

By feel, locate 4 screws under the foam, 2 each side.
Scrap away just sufficient foam in order to be able to remove the screws, and remove them.

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Étape 3

The speaker assembly is now held in the shell just be a number of tabs around the edges. Gently prise it out from these tabs and remove it.
Take care not to strain the wires.
On reassembly, make sure the headband fork is correctly positioned otherwise it will be impossible locate the speaker faceplate correctly in the shell.
Also on reassembly, make sure the speaker face plate is secured behind all the tabs.

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Étape 4

On the right side connection are made via a small printed circuit board. Remove 2 screws in order to remove this for re-soldering or replacement of any of the wires.
On replacing this circuit board, take care to ensure that it's both the right way round and the right way up
If you are replacing the main lead with the jack plug on the end, make sure that you have suitable strain relief to prevent the lead pulling on the soldered connections.
The wire colours are:
Right: Red
Left: Green
Common (Ground): Gold.