This unit is built by Samsung for Sears and this a common problem.
The first thing you want to check is the wire connections in the door hinge up top. The have a tendency to be shipped out of factory loose and this causes intermittent failures. You will also need to check the connections for corrosion of any sort. You can clean corrosion off with q-tips and alcohol.
If the wire connections look good let me know.
The only other thing you could have going on is an intermittent water valve OR a bad control board. Just let me know about the wire connections in the door hinge area.
Ok, I checked all of the wire connectors at the top of the door and they all are seated securely. I also checked the connector at the actual icemaker itself and the plastic wire connector there was seated securely. However I did find that the ground wire was attached loosely. It seems like the wrong screw was used and it was too long. I placed a nut on the screw to cause it to tighen up against the metal part of the ice maker and the ground wire eyelet. I turned it all back on and am now awaiting any new results. how long before it should start the ice making process?
Ok it just dumped the ice, the mechanism rotated completely filled with water again. Now to see if it make a bucketful. I will know by end of day tomorrow. If is odd we have been through 3 service techs with 3 different companies/ I am a Internet engineer not an appliance repair person, but even I knew a loose cable was not right. And that is the first thing you mentioned. Sheesh where are the good service people all gone to.
Again Thanks so far I dont want to get too optimistic but you may have it.