1 - 3 horas
intermittent back-light depending on screen hing position
Inverter cable replacement process worked well, but broke one of the screen bezel plastic clips. Dissemble time was an hour and reassembly, 30 minutes.
The key is to organize screws as they are being removed to make installation easy. Clips are only $3 each and might be worth buying one ahead of time if breaking them is common. Part was listed as "used", but the part received was new. I was very hesitant to buy a used part, but I felt obliged to buy from Ifixit since their excellent repair guide made the repair possible.