Did you say the light on the AC adapter doesn't come on when plugged in? There are four gold pins at the end of the AC adapter. Make sure none of them are broken off or pushed in. If they are stuck in, you may be able to get them to pop back out with a pen. Other than that the AC adapter and DC-in board are magnetic. Make sure they are both free of debris and nothing else metal is stuck where they connect to eachother.