Power Management Unit (PMU)

Discussion in 'Mac Basics and Help' started by tokolosh, Jul 25, 2007.

  1. tokolosh macrumors newbie

    Jul 25, 2007
    Hi there,

    This is my first post here and unfortunately I'm posting due to a problem with my Powerbook 15" 1.67GHz

    My Powerbook is suddenly going into sleep mode for no reason (preferences set to never sleep).I've done everything to try to fix this issue including reinstalling my OSX.

    I've read that I need to change the Power Management Unit (PMU) on this forum and I was wondering where it is on my computer?
    Is it a part of the logic board or a single part that can be replaced separately?
    Where could I get one?
    Approximately, how much should it cost?
    Would it be quick job for a technician to reinstall it?

    Thank you so much,

  2. mad jew Moderator emeritus

    mad jew

    Apr 3, 2004
    Adelaide, Australia
    Before trying to replace it, have you tried resetting it? Generally it'd be the power supply that needs replacing. Obviously the cost varies depending on where you live, but iFixit might give you an idea... :)
  3. tokolosh thread starter macrumors newbie

    Jul 25, 2007
    Hi thank you for your help :)

    Yes, I have done everything possible including scripts and resets. It is defiantly a hardware issue.

    Please help me,

    Do I need to buy a new logic board ?

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