David for Model Number TFX20JRXD WW I replaced the timer Thought Heaters where ok think my ohm meter going bad is there any other controls besides the heater and defrost thermostat that might be causing it to not defrost. I would greatly appreciate your help. Also is the resistance 2 Ohms
Answer Hello David. No, the heater WR51X442 and the thermostat and the timer are the three parts of the defrost system. Based on the information you provided, you will need to replace the defrost heater, if it is open for continuity. Hope this helps. Read More... Answered by AppliancePartsPros.com | Tuesday, January 24, 2012