I have a Samsung RF266 bottom-freezer refrigerator from 2010. The fridge part is working fine; the freezer part is suddenly not able to cool below ~35°F.
I took off the evaporator cover and there was noticeable frost buildup on one of the pipes leading into or out of the evaporator:
Any ideas on what might cause this? Is this a situation to try to repair or is it time to get a new fridge?