Roger for Model Number JMV8208BAS I have a JENN AIR JMV8208BAS microwave that keeps blowing the one or both of the two internal fuses on the noise filter board. I have replaced the HV capacitor, diode and magnetron. I tested the HV transformer and thought it was ok but now an appliance repair service tells me the HV transformer is bad. I'm not sure that I believe their conclusion because when I unplugged the HV transformer, magnetron, capacitor and diode and then started the microwave the second fuse on the noise filter board blew.
Answer Hello Roger, Most of the time a bad door switch is responsible for the issue you described. You should replace all three door switches at the same time. The top and bottom ones are the same WP3405-001034 and the middle one is 3405-001033. Read More... Answered by AppliancePartsPros.com | Friday, May 22, 2015