Fix maytag microwave mmv5165baw vent motor runs continuously

SOURCE: maytag over the range microwave model mmv5165baw

Ours runs for 2 minutes and turns off for twenty then "resets". Gee I'm So glad I didn't buy the one that was $70 cheaper(NOT) that one would probably still work! Had this only one year and it's the Last Maytag item we will ever rely on!
Good luck finding a fix, it's a common problem apparently!

SOURCE: Maytag Microwave, Model MMV5000BAB. Discrepancies

remove the outer cover and unplug unit,then discharge the high voltage capacitor and check its capacitance with a capacitor checker,then check the high voltage diode in this circuit also,if they open up the high voltage doubler circuit won't produce the high voltage necessary to operate the magnetron tube to heat the food contents,also the magnetron can be going bad or can be loose setting up a vibration in the unit producing the hum also,your control board also has a relay in this unit that can also affect operation of unit heating and lighting