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power macbook sans keyboard/palmrest?
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Hi all,
Does anyone know of a way to power up a macbook, for diagnostic purposes, with the keyboard/trackpad/palmrest removed? I am in a situation of needing to "bench test" a macbook board, and do not have an available top that I could plug in (unless I disassemble the one I'm typing on now! I really dislike the idea of doing that, but if I must, I shall)
(edit) That would be a white plastic macbook core 2 duo 2.16ghz if that makes any difference...
thanks for any ideas...
raynman
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Last edited by raynman; Jan 7, 2009 at 03:29 PM.
Reason: error in specifying macbook madel)
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Moderator  Join Date: Oct 2001
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USB keyboard and mouse?
That's the way we did it when I worked at Apple. You'd also have to find where to short the power button to turn it on. I can't help you there, but you can certainly figure out where the cable from the power button connects to the board.
Steve
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Celebrating 10 years and 4000 posts on MacNN!
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keyboard, mouse, trackpad and power all seem to go into a single cable, looks to be 10 or 12 contacts...
any idea which contacts to jump? (they are VERY small)
raynman
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If you have the engineering know how to do this, you should know how to use a multimeter to find the correct location. I can't help you there as I don't have one of these machines.
Steve
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Celebrating 10 years and 4000 posts on MacNN!
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Thanks Steve - hadn't considered the multimeter because the contacts are significantly smaller than my probes will handle, but I guess I could fashion some pins into small probes and find the one with standing power and go from there...
I was really hoping that someone that had encountered this situation before would have a "simple" answer. By the way, you're right, on the ibooks I have worked on powering up was simple (jumper the two pins on the board where the power button cable plugs into the board) And, of course, the USB keyboard/mouse is the way to go for testing, I would think, just as on the ibooks, once I get it started!
Hard to believe that macbook techs have to attach a top plate to power on a board on the workbench - perhaps a "start/shutdown" button could be fashioned from a dead keyboard cable if one finds the correct pins.... sigh! ...another project for all of my future "free time"
anybody else have any other ideas?
thanks again,
raynman
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Moderator Join Date: Oct 2001
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I'm willing to bet one of the pins (or holes) for the keyboard/trackpad/power button flex cable can simply be jumpered to ground, so they probably have fashioned a little push button switch for testing, like I used to do to connect to the old tiny Molex power button connector. It's just a matter of figuring out which pin it is.
Steve
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I'm in the same predicament amazingly with a IC2D 2.2 and have found no success. I even have an old keyboard from an iMac G3 and the power button on that keyboard doesn't do squat when plugged into the macbook.
The cable that connects the keyboard/trackpad unit to the logic board has 5 pins if that's helpful to you.
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