Mary for Model Number WMH53521HZ We just bought our whirlpool microwave oven in November 2018. Our bulb blew the other day. We have tried a 40 watt appliance bulb. But now it won't turn off. Do we need to call a service man out?
Answer Mary, with the microwave unplugged, you may want to check the door switches to ensure that they are operating properly. These switches would be tested for continuity based on whether they are engaged or disengaged. Another thing to check for would be to check the control from connection P1 pin 1 to connection P4 pin 1 for continuity. If there is continuity at these connections with the unit unplugged, then you have a control board [W11182110] issue. Read More... Answered by AppliancePartsPros.com | Thursday, March 28, 2019