Microwave Lights are not Illuminating - Countertop Microwave

Does the light bulb need to be changed? 

If the microwave turns on and is heating, the light bulb might need to be changed. For specific information about your model, refer to the owner's manual. 

Is there power to the microwave?

If the microwave will not turn on, check to make sure there is power going to the microwave.  Check the following:

• Verify that the power cord is connected to an operational outlet. If you are not sure whether the outlet is operational and it is easily accessible, connect a known-operating small appliance with a similar power cord to the outlet to verify that it is operational.
• Verify the circuit breaker hasn't tripped or blown a fuse.