Is Apple Hardware Test Accurate?

Discussion in 'MacBook Air' started by dnspade, Dec 28, 2012.

  1. macrumors newbie

    Joined:
    Feb 19, 2012
    #1
    Have run the "extended test" of the AHT on line. There were no faults found. However, I am having battery/charging issues.

    Is AHT reliable or could I have a "bad" logic board despite the test passing? Thx.
     
  2. macrumors 6502a

    ConCat

    Joined:
    Jul 27, 2012
    Location:
    In an ethereal plane of existence.
    #2
    It is reliable, but sometimes batteries reach their end of life. It won't necessarily appear on the test, you just have to get a new one. I suggest bringing it to an Apple Store first so they can perhaps swap out the old one with a new one, just to make sure it really is the problem, before purchase.
     
  3. DJLC, Dec 28, 2012
    Last edited: Dec 28, 2012

    macrumors 6502

    DJLC

    Joined:
    Jul 17, 2005
    Location:
    Mooresville, NC
    #3
    AHT has missed things before that my AASP later ended up finding. And I should mention that we've had quite a few battery / charging / power problems on the 2012 MBAs at work (we have 200).

    Reset your SMC and make sure you've installed firmware updates.
     
  4. thread starter macrumors newbie

    Joined:
    Feb 19, 2012
    #4

    Excuse the ignorance, but how would I know if I'm current on the firmware updates? Have upgraded to Mountain Lion, current on the "software updates" that i review weekly, but have a feeling there may be something I'm missing here....
     
  5. macrumors 6502

    DJLC

    Joined:
    Jul 17, 2005
    Location:
    Mooresville, NC
    #5
    Firmware updates come through the usual Software Update channel — or the App Store in ML. As long as you have none in the list, you're good.

    Try resetting the SMC as described by Apple here. Failing that, head to an AASP or Apple Store.
     

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