If a message about the door appears in the display, the door has been closed for 5 minutes or more without the microwave oven being started. This occurs to avoid unintended starting of the microwave oven. Open and close the door, then start the cycle. Be sure no packing material is blocking the door lock system.Click to see full answer. Regarding this, does a microwave have a reset button?Press the “Off/Clear’ button to cancel anything on the display, and reset the microwave. Plug the GE microwave back into the wall power supply to reset any anomalies with the microwave’s memory. You will need to reset the time of day if you perform a hard reset.Likewise, how do you reset Samsung microwave oven? All you have to do is unplug your Samsung microwave oven from the electrical outlet. Wait for two minutes, or at least until the microwave resets. Make sure to leave the microwave unplugged during this time while it resets. After the microwave resets, then you can plug the microwave back into the electrical outlet. Also know, how do you troubleshoot a microwave oven? How to Repair a Microwave Oven Step 1: Unplug Power and Remove Moving Parts. Step 2: Open the Back Cover. Step 3: Check the Fuse First. Step 4: Inspect Door Switches. Step 5: See Inside of the Switch. Step 6: Buy a Replacement Part. Step 7: Install the New Switch. Step 8: About Discharge Capacitor. When should a microwave be replaced?The average microwave oven lasts about seven years with normal use, and even less with heavy use and poor maintenance. A large family may find themselves replacing their appliance every four to five years as they become more reliant on its use to heat up snacks and leftovers, or to defrost meals.