ice maker can cause whole appliance to stop working , sounds silly but it does on this model ..you may be getting a blank display screen with a little gree segment flashing
check this ebay item rs21 ice maker and watch video below listing
ebay item 280583239561
hope this helps
jake
May 2012
Believe some fuses on board bottom rht back. Unplug and check them
SD
May 2012
I can answer this question...
RS21DCNS Samsung side by side fridge freezer American style?