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A1278 MBP 820-3115-B No backlight (help needed)

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    #1

    A1278 MBP 820-3115-B No backlight (help needed)

    Hi everyone. Got a MacBook pro a1278 2012 820-3115b motherboard. When powers on black screen and can see if light is flashed on apple logo. Keyboard and trackpad does not work but usb keyboard and trackpad works fine. Anyway when I log on it goes to sleep very quick. The sleep led indicator on all the time.
    Led output is stuck on 12.6v
    Changed 4 ic drives still the same.
    Then put a Windows hdd and backlight is on and keyboard works fine.
    NOW then : smc fault? Bios fault ? What the hell is wrong with this. Never had this before.
    Any help will be much appreciated.
    Thanks to all
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    #2
    Re: A1278 MBP 820-3115-B No backlight (help needed)

    Anyone?

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      #3
      Re: A1278 MBP 820-3115-B No backlight (help needed)

      All sorted. It was smc. Cool

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        #4
        Re: A1278 MBP 820-3115-B No backlight (help needed)

        Hey!
        I've got a similar issue here, but it stays on a black screen with only the backlight on after the startup chime. Nothing else.
        I'm new to MacBook repair, but I've watched heaps of Louis Rossman videos.
        How did you figure out that it was the SMC?

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