No power to GE Spacemaker Microwave

I have model GE Microwave serial # JVM2070SK02. I start to cook something and it shuts off 5~10 seconds. Keyboard is still lit up, but no clock, fan, light and you cannot operate anything on the key pad. Unplug the unit and it resets. Sometimes it cooks, sometimes it doesn't? It is getting more frequent with the shutting down problem?

Check this out first before you buy any new parts.
The mag's little cooling fan probably broke loose and fell off the fan motor's shaft. The fan motor will still be running when you hit start but there is no fan on it. The fan keeps the mag cooler. The mag will heat up too much and then shortly the oven automatically shuts everything down when the mag gets too hot because the fan blade is just lying in there, Fan needs to be glued back on the shaft after the shaft is roughed up a little. Disconnect the plug-in wires (note where they go on), wiggle and remove the fan motor from the oven. I used contact cement to hold the fan to the shaft. the fan motor is located right behind the control panel. You have to first remove the grill, then the control panel's screws. It's not difficult to repair. No new parts needed.

Hi this is tech crazy
the solution to the problem is as follows

Possible causes:

1. No power to outlet (overload or fault in microwave or other appliance).
2. Blown main fuse - likely due to other problems.
3. Open thermal protector or thermal fuse.
4. Defective controller or its power supply.
5. Clock needs to be set before other functions will operate (some models).