The adapter input should measure about 300 ohms. If this is ok, then the cord could be open. Wiggle the cord at both end while checking for voltage. If no voltage or intermittent, cord can be cut off and reconnected. The charging stand side can usually be taken apart. At the adapter end, slide a small screw driver along side the cord into the adapter and pry/break the container open. Cut off the cord, reconnect and repair container. I made the assumption the diode is in the charging stand and is ok..