I have an Early 2011 MB Pro that needed to have the Magsafe DC-In Board replaced. The problem is that the adapter will not turn yellow or green unless the battery has been disconnected first. Once the battery is reconnected, I close everything up and go about my business. The battery will even charge. However, once I disconnect the Magsafe adapter and go on battery for any amount of time, I must redo the operation above for the adapter to start up and charge the battery. The adapter is also brand new. Any ideas?