I have been experiencing a problem with the in door Ice dispenser on my side by side refrigerator. When I press a glass against the dispenser the door flap opens but the motor does not turn. If I remove the two screws on the ice dispenser front panel and disconnect the wire plug that attaches to the circuit board on the front access panel and then reconnect it, the dispenser will work for a couple of times before it fails again. Can someone help me identify whether or not I need a new circuit board or a new motor for the dispenser? Thanks for any help.