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Headphone and earphone repair.

post #1 of 6
Thread Starter 

Hello everyone, i've got this question i've been googleng for ages but haven't found much.

 

So I bought these earphones "Soundmagic E-10" they worked nicely until one month later (When the amazon warranty expired lol).

The bass was gone on the right side, most of the sound was.

So I'm that kind of person that likes fixing stuff, and I opened them and noticed that there's a plastic layer over the driver of the earphone, and thought it may have to do with that.

Anyways, I left them there upon not finding much information on the web.

But then comes the funny part, today I'm using my headphones, they are not a big deal, but I use them often. "JVC HA-S400"

AND IT SUDDENLY HAPPENS THE SAME THING.

The bass is gone on the right side this time, ain't that some ****.

I open them up, and Aha! The plastic layer thingy is like wrinkled on the side the bad sound is coming from. With wrinkled I mean, there's a pretty apreciable difference between the flawlessness of the surface of the other speaker.

I've thought about it breaking because of excess stress on the headphones, but I really doubt it, as both times it the problem appeared when I was not using them, and I don't really put my music too high.

 

Well, all in all, my question is, does someone know what's the problem? And if someone knows, can it be fixed?

 

Thank you for your attention.

 

Will add more information if asked for it.

post #2 of 6

Pics would be useful to know exactly what you're talking about, but my first thought would be that whatever you're plugging them in to is damaged and has DC offset on one channel which is killing your headphones.  Do you have access to a multimeter and a cable which you can cut in half to check? A spare jack would be even better, but most people don't have one lying around... 

 

I would stop using whatever it is (or at least it's headphone output) until you've checked as it will do the same to the next pair if that is the problem :triportsad:

post #3 of 6
Thread Starter 

Interesting, It may be, as I use them on my phone (don't think it's the problem) and on an output in my pc speakers, which current comes directly from the plug.

 

I'll take pictures tomorrow when there's more light and post them here.

In any case, what I see that's wrong is that this plastic surface over the driver, that looks kinda like this: ( http://cdn.head-fi.org/5/50/50a510b1_PB060367.JPG) hasn't got the shape it should have, it's like wrinkled with inward bumps and stuff. (that's just on the bad side, the other one is like on the pic, looks nice.)

 

Thanks for your help!


Edited by Theseregi - 3/14/14 at 3:50pm
post #4 of 6

That plastic is part of the driver (the coil in the middle makes the plastic move to produce sound) and having just put 9 volts through one myself testing a malfunctioning amp I can see what you're describing (I think - pics would still be good)  I'd not seen it before and hopefully wont again.

 

If it is the same thing it will have been instant, were both plugged in to the same thing last?  Could be the phone or computer as headphones take milivolts and phones run on around 5...

post #5 of 6
Thread Starter 

Now that I think about it, I think the problem started on the in-ears after using them on the pc and on the over-ears after using them on the phone... strange.

The curious thing is the problem appeared between use sessions, huh.

Will post pictures tomorrow.

post #6 of 6
Thread Starter 

Sorry for not posting the pictures yesterday, I was pretty busy.

 

I tried to dissassemble the headphones but it seems like it can't be done without breaking the plastic. I took the pictures I could.

 

[IMG]http://i58.tinypic.com/28wgz92.jpg[/IMG]

(Bad earphone [Right], not much to be seen)

 

[IMG]http://i62.tinypic.com/2zjj5nq.jpg[/IMG]

(Bad headphone side [Right], it can be seen that it isn't too smooth inside)

 

[IMG]http://i60.tinypic.com/16blv8g.jpg[/IMG]

(Good headphone side [Left])

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