If you enter a cook time and then press "Start," and the turntable turns, the timer counts down, and the inside light works, but it does not energize the high-voltage section, then chances are you have a door switch issue.
On this model, it would be a defective top door switch, or the primary interlock's (top door switch's) mount is loose, misaligned, or broken.
My help file on door switches is here:
http://www.microwavecontrol.com/doorsw.htm
At my Web site I have a video showing you how to remove a typical grill and controller assembly. Then you will see the switches. I also have the service manual at my site and I can give you the direct link if you email me.
- Ed
[email protected] http://www.microwavecontrol.com