1 - 3 horas
My 13 inch MacBook screen would go dim if I opened the lid more than 90 degrees, which made using it a P.I.T.A and since I couldn't justify spending the money for a new one I decided to tear it open and fix it myself.
I was pretty worried after looking through the install guide and seeing that I had to disassemble my entire laptop just to install a tiny little inverter cable. I figured it was going to take me hours to do. It was a breeze! Took me about an hour and I was able to get my MacBook all nice and clean in the process. THANK YOU ifixit!
JUST DO IT! The best feeling is the feeling of accomplishment when you fix something that has been bugging you for a while and you take the time to fix it and maybe along the way people hear the word that you can do things like that and you help others in need also.