Ensure the LG microwave is firmly connected to a working power supply if the microwave will not turn on or function. Reset the local fuse or circuit breaker if necessary.
Open and close the microwave door firmly if the microwave has power but will not operate. Press "Start" after selecting the desired cooking program.
Press "Power" to check the selected power level if the microwave takes longer than expected to cook. Cook most foods at 100% power for the best cooking results.
Ensure the microwave is the only appliance connected to the electrical circuit if the clock display does not maintain the correct time.
Reduce the total cooking time if food is overcooked and increase total cooking time if food is not cooked enough. Place food in the center of the microwave oven and balance food evenly on the turntable.