Question about Sony MDR-NC40 Consumer Headphones

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How do I open up the earphone to refasten the mounting screw

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1. Carefully remove the ear pad.
2. There is a shiny plastic cover over the speaker with some foam padding. Gently pry this off - it is sticky.
3. You will now see the speaker holder - it is round and has 4 slots. If you gently rotate it anti clockwise it can be removed, releasing the speaker.
4. Under the speaker is a small round plastic sticker, this protects the back of the speaker from the screw - remove it.
5. You will now see the screw head - cross head screw - tighten it back onto the headpiece and re-assemble all components.

Posted on Aug 19, 2011

  • Enrique C
    Enrique C Feb 05, 2015

    Many thanks! I followed your instructions and it worked pretty well.



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