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The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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Does this mean replace keyboard? Power on/off button not working.

This MacbookPro will not start with the on/off key (on keyboard). I can remove the back cover and toggle the logic board start pads and it will start. Does this mean a full keyboard replacement or is there perhaps something else I may check? TIA

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was anything spilled on it? How does the keyboard function after you get it booted up?

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Daughter claims no liquid, but how does one really know? Rest of the keypad works fine, but the power button will not turn on or turn off the MBP. Is there a mechanism/circuit other than the keypad that may be at fault here? What can I check? TIA

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You could check if the water indicators a red and check the connectors. The water indicators should be on the motherboard and under the motherboard. You could test the ribbon cable to see if its really that. (It could be the connector)

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You may have a bad connector or a bad fitting cable, but unless anything weird happened to the Mac, it’s a bit unlikely. Try to see if a SMC reset takes place when you press the keys combination: left shift+ctrl+alt+power button with magsafe plugged in with Mac turned off..light should go from amber to green and then back to amber.

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Thanks, but the reset does not happen. I tried this first. Jon

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@jbonesteel The keyboard is the most likely candidate for replacement then.

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Thank you, not sure if I'm willing to take this full on job/expense.

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@jbonesteel Keyboard replacement on that MBP is a bit of an headache and not intended to be user replaceable. You may replace the topcase instead, the job is somewhat more straightforward and by all means worth the work involved considering the Mac value.

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