Chosen Solution

I followed the instructions fully and now my laptop will not charge. I followed apple’s instructions on how perform a SMC reset and a NVRAM/PRAM reset, but my laptop is still not charging. I also purchased a brand new charger from the apple store. Is there a way to re-sync the logic board and the MagSafe 2 DC in board that I’m missing? Could it be that the DC in board that I purchased is faulty? Or is it that the logic board is faulty? My laptop still turns on and runs but I only have 58% of battery life left.

Yes - could be either of those things. Why did you feel the need to replace the DC in board in the first place? Spill? Fall?