I was using the microwave and it heated 2 bowls of soup fine, removed them, put in two more, and ... nothing! The display lights are working but the turn table is not turning and it is not microwaving. Tried to reset to make sure I hadn't hit timer-only but no luck. Is there a fuse or something similar that may need to be replaced? The repair shop wants $40 to look at it and at least $100 labor to do any work (so a new microwave may be less expensive). If anyone can suggest possible troubleshooting or repairs, I'd really appreciate it!