Refrigerator side warm bur appears freezer still

The freezer feeds cold air to the fridge side,there's an evaperator fan that just blows the cold air from the freezer to the refrigerator side and then it returns to the freezer through the air ducts.check this,when you open the freezer door do you hear the fan blowing in there?if you don't you have a bad evap fan motor,if you hear it,remove the second draw from the bottom in the freezer side and touch the back wall,if there's ice or like snow on the back wall you have a defrost problem.if this is it send me the model number and i can look up the parts in your machine and i can help you,also look to see if there's droplets and ice on the food and shelves in the freezer,somebody could have left the door open and the air ducts frooze up and the air can't blow from one side to the other,let me know what you find and i'll help you out