Chosen Solution
I have a samsung rf28hfedbsr refrigerator. The freezer is working but the refrigerator section will not cool
these fridges has two thermostats one for the fridge, and one for the freezer can be a few things with the fridge, stuck coil, stuck fan, blocked vents, condensor fail, or too close to the wall for proper air breathing. but usually common is the thermostat. id call a refrigerator/aircon repairman, he can whip the old one out and replace it in few minutes at your home.