cold freezer, warm refrigerator

Pulled up part select video on u-tube. Followed instructions on dissambly of top freezer and found condensor freezing up blocking air from refrigerator. Checked timer to make sure it was good. Next checked continuity on heater to make sure it was good. Last checked bi-metal thermostat for continuity while cold. Found Bi-metal part to be defective (also rubber in top of was popped up which is a sign of a bad part). Simply ordered new part from Part Select, received in 2 days and replaced Bi-metal and melted ice with hair dryer and reassembled freezer. While waiting on part you can still use refrigerator by melting ice so air can get to refrigerator. I put a towel in bottom of freezer to catch water. Greg W. in Ga.