John B Phila , PA April 20, 2015 Defrosting not working Defrost thermostat....and while cover was off I decided to go with new heat element also. The hardest part was to get built up ice to melt with hair dryer...and didn't care for heat shrinks supplied with new part. Ended up using my own. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours