Kevin M M , TX June 24, 2022 Appliance: Model DFBB536R The freezer would go into defrost and get stuck and then it would come out of defrost and the ice would turn into a big block I talked to the factory they told me that it was probably the high voltage control board so I ordered the high voltage control board installed it powered it up and it works fantastic. Read More... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Nut Drivers, Screwdrivers, Wrench Set