There was information on the web that allowed me to determine that the optics boards in the freezer had failed (two blinks, separated by one-second intervals, no change when the push-in door was depressed). Basically, the icemaker thought that the bin was full when it wasn't. The video on how to change the circuit cards was very helpful. Followed the video, replaced the circuit cards, and the icemaker started making ice. Easy fix. The circuit cards sold on the AppliancePartsPros.com, Website are certified factory replacement parts. You can find cheaper Chinese knock-offs on the web, but the reviews indicate that they won't last long in service. Better to get the real thing that will last a long time.