Chosen Solution
Your braver or more foolish than I am as i won’t work on one of this. Door Switch Most microwaves have three or four door switches. When the microwave door closes, the door switches actuate in sequence to ensure that the door is closed properly. If any of the door switches fails, the microwave will not start or heat. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches does not have continuity, replace it. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace a door switch.)
There is a fan that pulls air thru the magnetron for cooling check to see if the fan/motor is still working
and their is Ribbon Cable on board you just clean
The thing is, you have done what most technicians would have done. And the answers you are receiving on the forum, are generic as to the obvious reasons. My advise is to get someone who has the test equipment to test the system, the fault you experienced has not been solved by your approach, which under normal circumstances should have been solved…..it could be as simple as an incorrectly installed diode, to a failure on the transformer. A good technician will get to the bottom of it.:-)
My capacitor to my fan was. Blown and not starting to keep the megatron cool.. Update (09/28/2022) My capacitor was blown to my fan to start it to keep the megatron cool
