High Voltage Diode

Hello Doug, Thanks for your question. Based on your description, the magnetron is the more likely cause of your issue. Remember, the microwave can still contain a large amount of electricity even when unplugged, so be sure to have a licensed technician install the part. I hope this helps.

Hi Jim, Thank you for your inquiry. If the circuit breaker was tripped the fuse might have blown in the microwave and you will need to replace it. The part number for the fuse is PS239596. I hope this helps. Thank you and have a great day!

Hi Tom, Thank you for your question. There are a few parts that you could check for this issue. Please be advised, you must unplug the appliance from power and safely discharge the capacitor before attempting any repair as the capacitor can electrocute you if not properly discharged. You would be able to test these parts with a multi meter, remove them from the appliance before testing. First you should take a look at your fuse being the issue. It should be reading 0 ohms to be working correctly. You should also check your diode. You will also want to test all of your door switches to make sure that they are working. They should also be reading 0 ohms to be working correctly. If those parts are fine then the issue might either be in your capacitor or your magnetron itself. I hope that helps. Good luck with your repair.

Hello Steven, Thank you for the question. This could be caused by a defective Magnetron. The magnetron can be tested with an multi meter set on the highest scale. Across the terminals, you should read 0 ohms (or .5 ohms). Test both terminals to ground with one lead and make sure it is not shorted. We hope this helps!