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Please help to identify component

Discussion in 'General Electronics Discussion' started by geoffrey, Sep 16, 2010.

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  1. geoffrey


    Sep 16, 2010
    This is a 3.5mm headphone socket from an LG Express laptop. The motherboard is labelled DYnamic KSMO-V0 E15063094V-0. The socket is labelled A604C.
    There is some sort of switch at the far end of the socket - when the jack is inserted the tip does not contact the switch but stands off by a fraction of a millimeter.
    Can anyone say what is the nature of the switch ? Since its not contact operated how does it work ? I enclose photos showing both sides of the mystery switch removed from the socket, a view showing the hole through which the tip of the jack is exposed and the complete socket.

    Attached Files:

  2. Resqueline


    Jul 31, 2009
    That is an InfraRed device, quite possibly a proximity (reflective) detector.
  3. geoffrey


    Sep 16, 2010
    Many thanks for that - do you have any idea as to who manufactures this combination switch ?
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