Goldstar Microwave The micowave stopped heating and making a funny little noise, however everything else is working just fine. The turntable, lights, clock, timer, fan, etc. is working. Any thoughts?

Could be the relay, an internal fuse. With the power off, open up the key panel and search for a fuse. Also, there are thermo sensors black, diameter of a dime and 3/8 inch thick with two wires. Check the fuse and replace if necessary. The thermo can be jumped out to test. Remove the wires, use a paper clip between them and tape it up. Briefly turn the unit on. Replace if it works now. The thermo is generally clamped to the wall of the oven behind the key panel. Never run without the thermo sensor.