1 - 3 horas
My Santa Rosa macbook had the classic problem of a screen which went dark when opened to about 90 degrees. I looked it up online and found out what the problem was: converter cable gone west. I got a quote from a recommended Mac repair outfit here in the UK - it was going to cost (gulp) £140 plus VAT (20%); that's around 260 USD. So I went to ifixit, had a look at the repair instructions, put it off for another few months until I couldn't use the computer any more. Then took the plunge and bought the cable (a miniscule 19 USD + 10 postage) and waited patiently, meanwhile looking at the guide every now and again, and breaking out into a cold sweat.
When it actually came to doing the repair I found the guide incredibly helpful. I particularly appreciated that the screw sizes are listed for every single one removed. I am: a woman, not a techie, don't work in computers, have no electrical/electronic knowledge. I followed the guide to the letter (this is very important) and successfully replaced my inverter cable. Yeah!
It took me several hours, partly because I was going very slowly and also because the person who assembled the mac had put some screws in so tightly (particularly in he hinges) that it took me ages to undo them.
Get an empty egg carton or two and put the screws you remove in the sections and write the guide number on each section.