I was actually looking for an answer here. My microwave (same model) after 2 years runs as soon as I close the door (intermittently). It’s not actually activating the magnetron as nothing warms up. No table movement, no heat, and no counter/timing display. The microwave still lights the inside lamp, and the fan still blows. I have seen this over the last 20 or so years and normally this problem is due to the door switch microwaves (easy fix…unplug the system from line voltage first and ohm out the switch when it closes = if it doesn’t change resistance {open/closed} it’s always closed). I can’t duplicate the problem using a plastic device to test this theory when on, with the microswitch closed physically by the plastic pot. turner stick and system on. Looked like possible magnetic switch on face of door, or where these “bumps” hit on the inside of the microwave front plate (I used a magnet thinking it used a “reed switch”) but that had no effect. Hope I added some simple troubleshooting here but would like it if someone else had a better response for my problem. Thanks to all, that’s how we help each other !!