Barry M Bismarck , AR January 12, 2017 Appliance: Samsung Refrigerator RS263TDBP/XAA Samsung Refrigerator Rs263tdbp/Xaa: Ice maker stopped functioning would cycle once if test button was engaged. How to replace Refrigerator Main Control Board Assembly. Replaced the ice maker which behaved the same as the one I replaced. On advice from Appliance Parts Pros (cannot say enough good things about these people) replaced the main computer board. It fixed the problem. It also turned out the original ice maker was never working properly. Instead of cubes, the original ice maker dispersed broke pieces which not only went into your cup but all over the kitchen floor. The new unit makes perfect ice cubes now. Unplug fridge from wall socket. Ignore the caution "ONLY TECHNICIAN SHOULD REMOVE". Remove the two screws on the metal panel in the back of the fridge. Remove the metal panel. Unplug the wire harnesses on the old board. Remove the old board. Install the new board. Connect wire harnesses. Replace panel. Plug fridge into wall socket. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes