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Repair guides and support for full size headphones that encompass the entire ear, also known as circumaural headphones.

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No sound in left ear on Sennheiser PXC 550.

I realize that no audio in one ear is a common problem, but bear with me.

I already tried to see if it’s the audio jack that is causing it and did all the common fixes, but no luck.

Then I took apart the left side to try and see if it it was a wiring issue; yes and no. So the wire to the SP- on the PCB was not even connected, but upon soldering the wire to the pad, there was still no sound.

I did a continuity test with my multimeter to see if a wire broke and I actually got a crackling noise coming out of the left ear, so I guess that’s not the issue.

So now I’m stuck at this step and have no idea what to do (short of ripping apart all the wiring).

Image of left ear PCB: https://i.imgur.com/l5NMG2x.jpg

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Puan 2
7 Yorum

I have the same problem right now. Heavily disappointed that this seems to be such a common issue and yet Sennheiser hasn’t addressed it. I’ve had my pair for less than two years, and have kept them in great condition so I doubt that it is the fault of the user. Funnily enough, I discovered that the left earcup still works when you activate the different effect modes - albeit it is definitely fainter than the right one and music sounds off centre. Did you manage to get them working again btw?

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I haven’t ventured into openings them yet as I don’t want to damage the exterior. Was hoping iFix it would have some suggestions on the procedure.

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Is yours still under warranty? Because if it is then definitely don't take them apart as that will render them out of warranty.

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No, they’re no longer under warranty, unfortunately

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I have the same issue left ear only works when the headband is extended at certain points

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5 Cevap

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Seçenekler


1. Remove the right earpad.

2.Remove the small black stickers wich comouflate the screws.

2. Undo the screws wich tighten the ear piece.

4. Upon removing the ear piece, On the upper side of the ear piece you will see a line of several contacts wich are coresponding to contact surfaces on the ear piece.

5. Clean the lot with oilless contact cleaner. Await the cleaner to dry for few minnuts.

6. Essamble the ear piece as you desmantled them.

7. Victory!!! It should work OK.

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I have same issue. I never will buy Sennheiser brand anything. This issue so common and you cannot fix it without damaging headphones

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Puan 1
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Looking at your solder work, it looks like you may have a short on the right hand side of the image there. The solder looks like it may be bridging two of the contacts.

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Puan 0

2 Yorum:

On which ones, By M_G/M_FF or SP+/SP-? There is some kind of resin covering both sets, so I don't know if it's conductive or not and whether that shorts the connection.

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1. Remove the right earpad.

2.Remove the small black stickers wich comouflate the screws.

2. Undo the screws wich tighten the ear piece.

4. Upon removing the ear piece, On the upper side of the ear piece you will see a line of several contacts wich are coresponding to contact surfaces on the ear piece.

5. Clean the lot with oilless contact cleaner. Await the cleaner to dry for few minnuts.

6. Essamble the ear piece as you desmantled them.

7. Victory!!! It should work OK.

tarafından

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I have the same problem but the audio works again when the headband is fully compressed, so I guess the issue is in the headband, not on the left speaker itself.

Did you try disassembling the headband to see how the sound travels from the right driver (which seems to be the one with all the master controls and probably the receiver for Bluetooth as well).

I haven’t tried to open it myself and was hoping someone knew how to do it without breaking them.

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1 Yorum:

same here, something in the head band cause the left ear works only sometimes and I I apply pressure on the headband it will wok...Where can I buy that wire? How did you do @christianoliver? thanks

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I have the same problem. This is almost definitely a "designed to fail" feature. I hope this severely compromises the brand reputation as this is the only way they will stop these practices. The wires are as thin as they can possibly be. I'm not even sure this is a continuity issue but in any case, at the price point these should be repairable and easily reparable.

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