Do-It-Yourself Story

All other functions seemed normal but nothing would heat at all. Eliminating the other top causes for malfunction; diode, cap, power supply, fuse, narrowed down to magnetron which incidentally had a cracked magnet ring. Received replacement in less than one week. Replaced part and unit function has been restored. Also replaced the light bulb while it was opened up. Ordered fuse and door switches just to have on hand should they ever fail. This being a 20-year-old unit parts are becoming unavailable. After researching replacement units I found it was going to be unlikely to find a unit to match the size and appearance of the current built-in over the stove as the cabinets were custom-built around the appliances. I hope to keep it running as long as possible.