A toaster oven is simply a heating element with a timer and is easy to repair.
You can access the heating element through the clean-out door on the underside.
Location of the typical toaster oven's thermal fuse.
Most toaster oven controls can be accessed by removing the unit's side panel.
Toaster ovens are handy, especially when you want to bake something but don't want to heat up the entire kitchen with a full-size oven. Or if you want only a small portion. Think of a toaster oven as a big toaster or a small oven. Here's how to fix one that needs repair.
A toaster oven is a small heating appliance that toasts bread, waffles, etc., and may (depending on the wattage) also function as a miniature oven. Some allow you to bake and broil foods, offering precise temperature and function controls.
To operate a toaster oven, controls are set, the door is opened, food is placed on a shelf, and the door is closed. If set for toasting, the toaster thermostat operates the upper and lower heating elements as selected by the controller. If set for baking or broiling, the baking thermostat operates the heating elements as selected by the temperature controller and possibly by a timing mechanism.
The features of toaster ovens vary considerably from model to model. However, most operate in the same manner and can be diagnosed and repaired similarly.
The problems that toaster ovens may present are similar to those of other heating appliances. The electrical cord may need replacing (see Testing Electrical Cords). The main switch, the thermal fuse, and the solenoid may be faulty. The thermostat may be faulty or need recalibrating.