Resolved Macbook Not Detecting Lid Close

Discussion in 'MacBook' started by infinityends, Feb 10, 2015.

  1. infinityends, Feb 10, 2015
    Last edited: Feb 11, 2015

    infinityends macrumors newbie

    Sep 27, 2012
    I took apart my 2008 aluminum macbook to clean it out and apply fresh thermal paste. After re-assembling the laptop, everything is working fine. With the exception that when I close the lid, the computer doesn't even attempt to enter sleep mode.

    I have tried SMC reset, PRAM reset, updated to mavericks. Tried a new user profile. Took the machine half way apart to check that cables are securely connected. Also tried the sharing settings reset as well as the magnet trick to force the macbook to think the lid is closed. No Luck

    I've searched online for further suggestions and haven't come across anything that works for me. In the power logs it doesn't even appear that the laptop is getting the sleep command.

    It is such a minor problem, but very annoying.

    Any help would be greatly appreciated

  2. spadz93 macrumors member

    Nov 24, 2009
    There is a very narrow orange-color ribbon cable right by the hard drive cable (more towards the battery). This goes to the IR/Sleep sensor. remove that cable, make sure there is no dust in there, and then re-insert that cable to make sure it's fully inserted. you might see a hair of the gold contacts, but it'll be fully inserted.

    I had this exact same problem, and this did it for me.
  3. infinityends thread starter macrumors newbie

    Sep 27, 2012
    OMG! Thank you, worked perfectly.

    I figured some cable wasn't seated properly, I just didn't want to remove the board again to get to the couple connectors on the underside without knowing which cable I was looking for.

    I'm amazed this wasn't in any of the forum posts I looked through.
  4. spadz93 macrumors member

    Nov 24, 2009
    No problem!

    Check out, find your model and take a peek through their guides, you'll be amazed at how much they document over there. That's where i went to when i needed a guide to tear down my MB

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