Galaxy, you're correct about these KEB drives from MCE. It's a good idea to get these changed out if they are under warranty because typically they fail when powered down for service. Then when you power back up the drive is completely dead(no display).
Think about a power outage in a 6 car group and none of the cars come back up because of all of their drive's power supplies are NFG. This will motivate you to call Motion and see if your drives are under warranty.