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September 19, 2019
Our convection oven works and are keypad responds to every touch but the microwave doesn’t heat up anymore. The countdown timer also works. Also we can no longer hear the fan for the microwave. Thanks in advance
For model number pvm1790sr1ss
Hello Paul, thank you for writing. This could be due to either a faulty Line Fuse part number PS239525, or Diode Cable part number PS239148 for your model. Good luck with your repair!
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July 28, 2021
Microwave trips breaker as soon as it starts to run. I have verified internal fuse is good and door switches are good. The convection heats up the oven fine but hit the microwave button and power goes out with trip breaker. Is it a faulty magnetron? How can you tell if you have a bad magnetron?
For model number JVM1790SK
Hello Stephen, Thank you for the question. When a microwave repeatedly trips the breaker, it's an indication it is overloading the electrical circuit, which is rated to handle a finite number of amps. Once the microwave exceeds that number the breaker is tripped and the electrical flow is shut off. First thing to do it make sure there are no other major appliances plugged into the same circuit. A microwave oven needs its own 20 amp circuit, in order to prevent an overload. If the Circuit is good, you can try other outlets to see if the appliance still trips the breaker. If it trips the breaker then there is a issue with the appliance. If the Door Switches are good, you can check the Turn Table Motor. In most cases fluid or moisture may spill over and down the center post to the motor and get the motor wet causing the power surges. You can also test the capacitor, Diode and the Magnetron. Please remember the appliance can hold a dangerous charge even when Unplugged. We hope this helps!
Convection oven works fine, microwave sounds like it is heating but doesn’t. All other parts work, fan, light, timer, clock, & turntable. What would keep the microwave from heating?
For model number PVM9179SF1SS
Hello Tom, Thank you for your inquiry. We would recommend checking the following parts to fix your issue: the Diode, the magnetron, the plate thermostat, the safety thermostat, and the door switches. You can test the parts with a multimeter. If you are unfamiliar with how a multimeter functions, we have videos available to assist you. For safety reasons, since the microwave capacitor can still store electricity even when the microwave is unplugged, it is usually advised that you discharge the capacitor before any attempt at repair. We have included a link on how to do so.
https://www.partselect.com/Microwave+discharge-capacitor+repair.htm Good luck with your repair.