No power to microwave.

[millerl513]

As an update to an earlier post the ceramic in-line fuse tests ok., and the door switches check out ok. Four thermostats are located within the unit–one is what they used to call the flame arrestor and is located in the top of the unit pointing downward and shows continuity (#AP3994055), one is on a bracket attached to the side of the magnetron and shows no continuity (#AP4344046), one is attached to the bottom panel and shows no continuity (part # is the same as the one attached to the magnetron), and the fourth is attached to the bottom panel adjacent to the one just mentioned–this one shows continuity (#AP3994357). Perhaps I am barking up the wrong tree but I thought that all four of these thermostats should show a continuity, but the two with the same part # are open. Would this be a coincedence, and if open would this shut all power off to the unit, or could it be another issue. any comments would be greatly appreciated—Larry