I had the clamshell on my MBP replaced and it now will not charge. When I plug the connector in, it glows green for a moment and then slowly fades out. Thus, I realize the battery is not completing the circuit and there is no incoming power. 1. Would anything in the process of replacing the clamshell cause the tech to disconnect the battery? If so, perhaps he missed reconnecting? 2. Any suggestions as to what to look at and check?