RepairFAQ.com features an extended guide called "Notes on the Troubleshooting and Repair of Microwave Ovens." DoItYourself.com has a much shorter guide called "Microwave Oven Repair 101." MicrotechFactoryService.com also has a microwave oven repair guide.
"Microwave Oven Repair 101" features information on what to do if a microwave oven doesn't work at all, if it constantly blows fuses, if it cooks slowly or unevenly, or if it operates but doesn't cook the food.
In "Notes on the Troubleshooting and Repair of Microwave Ovens," readers can learn about microwave oven safety, preventive maintenance, installation and test equipment needed for troubleshooting. The guide also has a brief explanation of how microwave ovens and different parts of them work. The guide lists more than 30 different problems that microwave oven owners might encounter and explains how to address them. It also contains information on the cost of microwave oven repairs, where to find replacement parts and other microwave oven repair-related topics.
Microtech Factory Service's repair guide takes the form of a table, so users can find all the necessary information quickly. The text contains links to other pages that have more extensive information about a particular test or repair.