this guide is amazing!! i did it well, been my very first time soldering cables, tip to remember: try to calculate the size of the whole soldering and the cable together, i didn't and before closing the case up, i realized it hasn't fitted, i disoldered everything and resoldered everything again... yes, i had to...

thanks guys! your contribution was very helpful. many thanks.

once again, thanks ifixit. i was succesful.

be careful with the connector, it was hard at the first time to take it away, i was close to break the wire

i could finally fix the problem with the soldering, 2 friends of mine did it, kind of surgery soldering, very precise. thank god, technicians used to tell me it was no fixing. be careful, maybe the solderings came out because of the hot temperature inside, it was full of dust, hairs, etc, the holes for the air were very blocked

be careful!, the connector is very fragile, actually I broke it up!