Appliances tend to stop working now and again, but before assuming they are broken, firstly check that the appliance cord is plugged in. Many times an appliance fails to operate because of no power. Examine electrical cords for signs of wear or other damage. Use a voltage detector to test whether the outlet is working. This simple sensor device, which is about the size of a pen, indicates the presence of electrical voltage. Also, check the breaker box. You may have to reset a circuit breaker. Major appliances can overload a circuit and trip the breaker when too much electrical current passes through.
Refer to the owner's manual, which often includes information about how to make repairs, as well as where to get replacement parts. Many manuals have detailed drawings and diagrams showing all the parts inside, in addition to assembly instructions. Some even offer basic troubleshooting tips. Parts that are held in place by screws, spring clips or other types of fasteners can normally be repaired by someone other than a professional repair technician.
Visit a local hardware store to buy any standard parts that you may need to replace. Manufacturers now use interchangeable parts to keep costs down. If you find that you need to order a part directly from the manufacturer, be prepared to provide the model and serial numbers of the appliance. Model numbers for kitchen ranges are usually found on the inside of the oven door on a metal plate. For other major appliances, a gold or silver foil plate is generally located somewhere on the outside of the appliance casing. Some major appliance parts have model and serial numbers of their own. You can also purchase parts from a service center or retail store that sells the parts you need, or online, often at discount pricing.