Ice build-up is the common culprit of an ice maker not having ice in the tray. This video will work with:
KitchenAid.
LG.
Frigidaire.
Whirlpool.
Samsung.
GE Appliances.
Maytag.
Café

All that is needed is a hair dryer to melt the ice to get the ice maker working again!

Hope this video is helpful!