This macbook was previously liquid spilled. That caused the keyboard to fail. Replacing it fixed everything for 2 months. Suddenly it started to not charge ( no green light) with original 85w charger but it did charge with 60w charger for a while, then it stopped. The only way to obtain green light is to unplug the battery and, to let it charge, plug the battery suddenly in. This let the battery charge. The board was ceaned several times with alcool and i couldn't recognize any corrosion (maybe a bit on the battery connector). Do anyone have some suggestion on where to look?