Jacqui for Model Number JVM1740 DM1BB GE Microwave Black Installed part AP3993811 key pad panel. Control instructions seem to be working with one major exception the unit does not heat. What should I try next?
Answer Hello Jacqui. Check the magnetron and make sure it reads less than 1 ohm. Also, test the thermal cutoffs and make sure they are closed for continuity. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Friday, August 3, 2012