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keyboard backlight repair

3589 Views 5 Replies Latest reply: Dec 5, 2010 4:16 PM by Merged Content 1 RSS
penguinn Calculating status...
Currently Being Moderated
Oct 26, 2010 12:52 AM
I took my Macbook Pro pretty much apart down to the keyboard and got it back together with no leftover parts. The only thing that does not work is the keyboard backlight. I do not see any connectors that I left off and would prefer to not take the motherboard out to see if I missed one unless I need to. Does anyone know where the backlight cable is connected or of anything else I might have done to kill it? Is it an especially delicate cable that I might have broken?
Macbook Pro, Mac OS X (10.6.4)
  • S.U. Level 6 Level 6 (8,360 points)
    Currently Being Moderated
    Oct 26, 2010 3:13 PM (in response to penguinn)
    Welcome to Apple Discussions!

    Before taking anything apart, you might try resetting the SMC or LabTic:

    http://support.apple.com/kb/HT1411?viewlocale=en_US

    http://www.apple.com/downloads/macosx/systemdiskutilities/labtick.html

    If no joy, then it's time to try taking apart your Mac and see if you can spot the cable and see if it is broken or not well seated.

    Good luck!
    MBP 17" hi res, 2.4 GHz Core 2 Duo, 4GB RAM, 500 GB HDD, Mac OS X (10.6.4), iBook G4, 800 MHz; PowerMac G4 867 DP(MDD); PB G3 PDQ; PB 145B; 12" PB G4
  • eww Level 9 Level 9 (52,975 points)
    Currently Being Moderated
    Oct 27, 2010 4:56 AM (in response to penguinn)
    Apple does not publish any schematics or related descriptions even for its own technicians, who never do repairs of the kind you've undertaken. I'm afraid you're completely on your own.
    15" '08 UMBP 2.4GHz/4G/250G; TiBook 1GHz/1G/120G; iPhone 3G, iTouch 32G, Mac OS X (10.6.4), scanners, projector, tablet, laser and photo printers, Pentax K-7, Olympus E-10
  • RDucci Calculating status...
    Currently Being Moderated
    Nov 28, 2010 3:51 AM (in response to penguinn)
    Hi Penguinn,
    I have the same issue after having installed an MCE Optibay adapter removing the Superdrive and the factory HD and inserting a 1T SATA drive + a 128 GB boot SSD. i was following the instructions with absolute care...
    Now , for some strange reasons, my backlight is dead: by pressing the keys f5-f6 the onscreen software indicators seems to work but no lights from Leds comes on.
    I checked and rechecked the flat cable for backlit, reset the SMC many times, redid all the unmounting and remounting of the Optibay, but no success........
    Any ideas ? Any progress from your side ? Should we run out to a service center ?.. With no apple care sounds expensive..... sad that there is no pictures of all the complete cabling....any more detailed informations ???
    MBP 17" Unibody, Mac OS X (10.6.5)
  • Level 6 Level 6 (11,035 points)
    Currently Being Moderated
    Dec 5, 2010 4:16 PM (in response to RDucci)
    Hi guys,

    I actually did this MCE optibay mod back in May 2009 and had the exact same LED issue.

    I poked around and then gave up.

    I'd buy a new top case if I thought that would fix the issue, but with you all having the same issue I'm beginning to wonder.

    Any ideas? I'd like to have the backlight working again.

    Henry
    UMBP 17, Mac OS X (10.5.7)

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