Free copies of GE microwave parts diagrams are available online at GE and Sears PartsDirect. In order to find the diagram for a specific microwave oven, the owner chooses or enters his model number. The diagram helps the owner to identify the specific part to order when making repairs.
On the diagram, each part has a number. To find the replacement part, the consumer finds the drawing of the part that matches the component he needs. As of 2015, some parts, such as the power control board, are costly to order when compared with the price of a new microwave. If the unit is several years old, owners sometimes find that replacement of the entire microwave is the more economical choice.