Samsung MW8490W, about 6.5 years old. Tried microwaving something today, and the microwave just vibrates and buzzes. It's definately a
60Hz-based buzz. No arcing or odd smells. Everything appears OK except the metal enclosure vibrates violently like there's a loose transformer in there. Oh, it won't heat water, and is drawing only about 350W from the outlet when running (rear label says 1.5KW).I can tell you everything you want to know about electronics (well, almost), but microwaves are somewhat of a mystery to me.
Any ideas on what's wrong, or where to start?