Whirlpool MH6150XMS Microwave Oven "timer counts down motion" Questions

...timer continues counting down and light stays on, but that's it. the door looks fine, cosmetically speaking... so what could be the problem? This is usually caused by either a bad door switch or a ...

timer counts down. No light comes on, no turntable motion AND no MW heating. Has my 12 year old GE JE1390 MW died? sounds like there is a switch that is bad. you can go buy a new MW for about 200$ and