Microwave oven does not start
Power cord is unplugged, door is open. Or, cooking time is not set.
Plug in power cord.
Close oven door.
Set cooking time.
A fuse in your home may be blown or the circuit breaker tripped. Or the appliance is connected to a GFCI (Ground Fault Circuit Interrupter) outlet, and the outlet's circuit breaker has tripped.
Check the main electrical box and replace the fuse or reset the circuit breaker.
Do not increase fuse capacity. If the problem is a circuit overload, have it corrected by a qualified electrician.
Reset the circuit breaker on the GFCI. If the problem persists, contact an electrician.
Arcing or Sparking
Utensils is not microwave safe. Or, operated the oven when it is empty.
Use microwave-safe utensils. When in doubt, test utensils before use.
Do not operate oven while it is empty.
Incorrect Time of Day
Power is interruption.
Reset the time. See Setting the Clock section to reset time of day.
Unevenly Cooked Foods
Utensils is not microwave safe. Or, cooking settings was wrong.
Test utensils to make sure it is microwave safe.
Do not cook without the glass tray.
Turn or stir food while cooking.
Defrost food completely before cooking.
Use correct cook time and power level.
Overcooked Foods
Cooking settings and methods are wrong.
Change cook time or power level.
Undercooked Foods
Utensils is not microwave safe. Or, cooking settings was wrong.
Test that utensils is microwave safe.
Defrost food completely before cooking.
Change cook time or power level.
Make sure that ventilation ports are not blocked.
Improper Defrosting
Utensils is not microwave safe. Or, cooking settings was wrong.
Test that utensils is microwave safe.
Change defrost time or weight.
Turn or stir food during defrost cycle.