Reassembling: Make sure, the cable of the DC-In board is on the logic board-side of the screw hole when putting in the logic board. Otherwise the display data cable bracket won't fit in and you have to remove the board again.
So I hope, the DC-In board was really the cause of my problems. I changed the battery and the charging cable before and still had problems. At this moment my macbook loads again, but I don't know if its because of the board or again just luck. Thank you very much for the guide.
Lorsqu'il en aura reçu, il pourra afficher un graphique de sa réputation au fil du temps.
Voici un aperçu de ce à quoi ressemble ce graphique :
Aucun point de réputation obtenu pour l'instant.