Ryan F Thibodaux , LA February 06, 2017 Appliance: Samsung Refrigerator RF268ABRS/XAA-0000 Step motor stopped working, Samsung bottom freezer was not cooling but the fridge was. Had to replace the step motor and recharge cooling system. Read More... 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Adjustable Wrench, Nut Drivers, Pliers, Screwdrivers, Socket Set, Wrench Set