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Current version by: ABCellars ,

Text:

Remove your battery and unhook your magsafe. Hold down on your power button for 30 seconds. Continue holding down the power buttonbutton, plug the magsafe into the computer, hold power button for another 10 seconds. Release the power button wait 2 seconds, press the power button as you normally would.
Remove your battery and unhook your magsafe. Hold down on your power button for 30 seconds. Continue holding down the power buttonbutton, plug the magsafe into the computer, hold power button for another 10 seconds. Release the power button wait 2 seconds, press the power button as you normally would.
 
I see you have already found the power on pads. The voltage you mention finding on them should be good. They are on the 3gHot rail which should be 3.3v.
 
If the little scenario with the power button does not power it on, check the connections of the power cable that run between the left I/O board and the logic board. That cable connection on the logic board tends to come loose and is also known to be a little fickle. If it is loose you can find all the proper voltages on the logic board. But, not have a good enough connection to handle the heavy current draw needed for powering on.

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Original post by: ABCellars ,

Text:

Remove your battery and unhook your magsafe. Hold down on your power button for 30 seconds. Continue holding down the power button plug the magsafe into the computer, hold power button for another 10 seconds. Release the power button wait 2 seconds, press the power button as you normally would.

I see you have already found the power on pads. The voltage you mention finding on them should be good. They are on the 3gHot rail which should be 3.3v.

If the little scenario with the power button does not power it on, check the connections of the power cable that run between the left I/O board and the logic board. That cable connection on the logic board tends to come loose and is also known to be a little fickle. If it is loose you can find all the proper voltages on the logic board. But, not have a good enough connection to handle the heavy current draw needed for powering on.

Stato:

open