1 - 3 horas
The screen for the Macbook would only stay on when open at specific angles.
I followed the step-by-step repair guide, and everything went very smoothly.
One thing I did to help keep myself organized was anytime I removed a screw or small piece from the computer, I put it into a small paper cup labeled with the number of the step from which it was removed. That way when I was putting it back together, I didn't have a jumble of screws to sort through.