Chosen Solution
Hi People, so I did the full (took apart everything) repair as follwing:MacBook Pro 15" Retina Display Mid 2012 Battery Replacementeverything back together, everything works fine. Except the magSafe plug wont show any light. The replaced battery wont charge, but it is running my macbook… now at 76% … till there will be no more juice left… While I was putting the macbook back together, I had medium struggle getting the cable connection coming from the new battery into the mainboard. After 3rd attempt with more and more pressure i relaxed my mind and it worked out easy. I think all other connections should be ok. Also rechecked everything.One more thing… I got twited memory… maybe i didnt turn the macbook off before… i dont know somehow :DDo you think i should just buy the used i/o board with the power in for magSafe to speed up my repair time? Do you think i need a new battery? I mean its working really good! I need my second brain back quickly… Please Help ! :)All the best from Germany,Marcel
@marzelou - I would check the DC In-Board connection (Step 32) on the back side of the logic board. Could you have not plugged it in or not fully seat it? If its connected maybe time to replace it!
