Micro stopped working with accompanying loud hum and burning smell. Pulled out of cabinet (micro/stove combo by Electrolux) and found blown (and partially melted) magnetron. Easily found exact replacement on Appliance Parts Pros--ordered, and had micro back working in 2 days! Great search engine and pictures of parts are so helpful;. Have ordered from these folks in the past and will probably do it again. $100 part versus big cost for repair service or a replacement.