Strange behaviour...

Discussion in 'MacBook Pro' started by systanford, Sep 26, 2011.

  1. systanford macrumors newbie

    Joined:
    Sep 26, 2011
    #1
    I have a MBP running Lion, 10.7. The specs are as follows:
    Model Name: MacBook Pro
    Model Identifier: MacBookPro3,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2.4 GHz
    Memory: 4 GB


    This morning I went to use it and the keyboard started playing up.
    I went to type in my password only to realise that certain keys were not working. Now none of them do.
    The back-light is fully lit across the 8,U,H,J,K,N keys but dim elsewhere.
    Then there was a crackling from the speakers too. Now only the left speaker is working.

    Anyone able to give a diagnosis? Advice, anything? Despite extensive searching I've found nothing...

    Sy
     
  2. lifeinhd macrumors 65816

    lifeinhd

    Joined:
    Mar 26, 2008
    Location:
    127.0.0.1
    #2
    Did you (or anyone else) spill anything on it recently? That's the only thing I can think of, because that's the only way the speakers and keyboard are related.

    You say the backlit keyboard is partially working, I take it this means the ambient light sensor is working? What about the microphone?
     
  3. systanford thread starter macrumors newbie

    Joined:
    Sep 26, 2011
    #3
    Nothing has been spilt on or near it...
    I've yet to check the mic, I will when I can and update accordingly.
    The ambient light sensor is working to an extent but not correctly. When covered it lights up the part I mentioned before, but then won't dim the lights when needed.
     
  4. systanford thread starter macrumors newbie

    Joined:
    Sep 26, 2011
    #4
    The mic and audio out are working fine.

    I've also noticed the four corners of the trackpad have become non-responsive to touch, unless the contact is made in the centre of the pad first. Eg, If I make contact with the pad in the centre then drag outward there is no problem. If I initiate contact towards a corner, the trackpad wont acknowledge anything until my finger reaches the middle.
     
  5. Ramunas macrumors member

    Joined:
    Feb 17, 2010
    #5
    Same stuff happened to my macbook pro 13" when I spilled coffee on it.
     
  6. systanford, Sep 29, 2011
    Last edited: Sep 29, 2011

    systanford thread starter macrumors newbie

    Joined:
    Sep 26, 2011
    #6
    No liquid has been near this though...

    Ok, so the cause isn't really the issue, what parts do I need to replace to remedy the issue?
     
  7. lifeinhd macrumors 65816

    lifeinhd

    Joined:
    Mar 26, 2008
    Location:
    127.0.0.1
    #7
    Likely the entire top case. You have an older MBP though, so this isn't as much of a hassle as on the newer MBPs. You'll probably need to source one from eBay. Make sure you get one for your specific MBP-- while I don't think the top cases changed between generations (with the exception of the introduction of multitouch), better to be safe than sorry.
     
  8. systanford thread starter macrumors newbie

    Joined:
    Sep 26, 2011
    #8
    OK replacing that is no issue, I have a source too. Would this remedy the speaker issue too do you think? Or would it be more likely that I need to purchase a replacement speaker set?
    Thanks for your help/advice.
     
  9. lifeinhd macrumors 65816

    lifeinhd

    Joined:
    Mar 26, 2008
    Location:
    127.0.0.1
    #9
    Ah yes, I'd forgotten that the speakers are not attached to the top cases in the older models.

    I would try reseating the connectors first. Without buttoning the machine back up (a real pain), test them first. If the problem persists, replace! ;)

    Good luck.
     

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