Level of DifficultyA Bit Difficult
Time to do repairMore than 2 hours
Age of ApplianceMore than 10 years
First did the easy part, removed and replaced the defrost timer. Didn't correct the problem.
Then got into the defrost heaters. Big job, because the factory didn't provide for repairs. Had to remove the ice maker because there was one screw holding on the cover panel behind it. The factory installed defrost heaters were run behind the freezer coils so I had to cut them out. Then I had to bend the light aluminum sides with heavy pliers to slip the burned out defrost heaters out and replace them with the new defrost heaters. Didn't use the defrost timer, because I was taking it one step at a time.
Now the refrigerator fresh food side maintains 39 degrees and runs 1/10 the time it was running. My wife says it's better than new! Saved $ 2,400 (the replacement she had picked out).