Couldn't have fix it alone without that tutorial and the efficient tools ;-)
1 - 2 horas
My macbook screen was down.
First, a vertical black line on the third of the screen appeared and a few weeks later, the screen was totally down, blinking and displaying only white.
I found the perfect tutorial on ifixit on how to dismount the macbook
After a few checks, I ordered the lcd screen on the same site because it looked serious and to thank the team for such a wonderful work on the tutorial.
3 days later (i'm living in France), DPD ringed at my door with the package. Fast and efficient
Before ordering, I checked that either the data cable and the video card were not the cause of the problem by plugging my screen to another macbook from a friend of mine. The screen was still blinking so it proved the LCD screen was the only cause.