Microwave Ovens - Recent Questions, Troubleshooting & Support

Hello Two options to try:

1) Press the Clock / Timer button 3 times

2) Unplug, wait a minute, then re-plug to power up with the factory settings. You will need to reset your clock and any favourite settings.

This should work with all Panasonic Microwave models.
Good luck

Panasonic... | Answered 11 hours ago

Clearly the magnetron is not providing any output - this might be because it has failed or might be because one or more of the components of the extra high voltage (eht) circuit has failed.

Discovering what is wrong isn't easy for the handyman and is downright dangerous - it should be entrusted to a specialist or it could be cheaper and more convenient to replace the oven.

Microwave Ovens | Answered Yesterday


make model installation instructions

impossible for us to guess what you have!

Microwave Ovens | Answered 2 days ago

Probably broken, take to microwave repair shop!

Microwave Ovens | Answered 3 days ago

The service manual and installation instructions are here.

Our help file on door switches is here.

You can find helpful exploded view diagrams and order parts & accessories here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

GE Advantium 120... | Answered 3 days ago

Your Kenmore microwave may not be working is because the thermal fuse has been cut off. This occurs when your microwave overheats and then the thermal fuse blows. Thermal fuses can't be reset if they're blown, so you have to replace them. Or Another cause of the microwave to stop or no longer working, Or having no power might be the ceramic fuse. If the microwave is not starting and display and is also blank then ceramic fuse could be defected.or the switch or the electrical components might be having issues Unplug the microwave and then access the fuse from inside the cabinet which is near the power cord. You could take it to a repair place that fixes and repairs microwaves or have someone come to your house that fixes microwaves to take a look at it.

Kenmore... | Answered on May 19, 2020


LG Microwave... | Answered on May 18, 2020

To remove demo mode, you should just need to press the "Timer/Clock" button 4 times quickly and it should exit demo mode. If it doesn't then something is wrong with your display board so try to unplug the unit for 5 minutes and try again. If it still won't exit demo mode, you'll need to replace the display board.

Panasonic... | Answered on May 17, 2020

I would check the door switches and door latches for contamination.

Panasonic... | Answered on May 17, 2020

To remove demo mode, you should just need to press the "Timer/Clock" button 4 times quickly and it should exit demo mode. If it doesn't then something is wrong with your display board so try to unplug the unit for 5 minutes and try again.

Panasonic... | Answered on May 17, 2020

For a vintage appliance from 1993, you may try finding a used identical model somewhere such as Ebay.com or using https://www.google.com and removing the door.

GE Microwave... | Answered on May 16, 2020

Hi and welcome to FixYa. I am Kelly. High voltage capacitors can and do fail when a microwave is used for long periods of operation, when the unit is operated with no internal load and sometimes for no reason at all other than the capacitor had an internal failure such as corrosion or a break down of the metal strips inside of it where the strips can make contact with the the case. I have been working on microwaves since the 70's and often there is no apparent reason for the failure of the HV cap.. They just sometimes fail.
However...... there is also a power diode in the microwave that is connected directly to one terminal of the HV Cap. If the power diode has failed it can cause subsequent failure of the HV Cap. The Sharp Power diodes can be found here: http://www.repairclinic.com/Sharp-Microwave-Parts?s=t-FH-DZA119WRKZ-%3d%3db113a6c41

You use and ohm meter on resistance to check the diode AFTER removing the terminal of the diode from the capacitor. NOTE: the capacitor must be shorted across the terminals at least 3 times with a screwdriver while holding the handle only to prevent a horrible shock.
Once the diode terminal is disconnected from the HV Cap read resistance in BOTH directions by reversing the test leads on the terminals of the diode. One direction will read resistance and the other direction it will read open / infinity. Any other reading is a failed diode.

You check the capacitor using an analog (scaled vs digital display) ohm meter on R X 1,000 or R X 10,000 and watch for a jump on the meter just as you touch the terminals EACH time you reverse the leads. No jump or... steady resistance = bad Cap.

Sharp Capacitors can be found here:

Just note that either a CAP or Diode failure can cause the main fuse to blow at the end of the power cord in the fuse holder.

Fuses are normally either 15 or 20 A Slo-Blo fuses and can be found here:

Thanks for choosing FixYa


Sharp Dial... | Answered on May 13, 2020

The diode converts the A/C power output of the transformer to D/C, doubling the voltage to nearly 5,000 volts. This high voltage powers the magnetron to heat the food. If the diode burns out, the magnetron won't receive enough voltage to operate, preventing the microwave from heating. When the diode fails, it is often visibly burned out. Inspect the diode and if the diode is burned out, replace it. If inspecting the diode proves inconclusive, test it with a multimeter that uses a 9-volt battery or put a 9-volt battery in series with the diode. When the leads are reversed, the diode should only have continuity in one direction. (Warning: The microwave oven can store a lethal amount of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the high running voltage and the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the diode.)

Magic Chef... | Answered on May 13, 2020

Demonstration Mode
This is to enable you to experiment setting various
programs. (The letter D will always appear in the display
window. This is to confirm that there is no microwave
power produced and it is safe to use the oven without
any food). To set Demonstration Mode: press micro
power once, then press Stop/Cancel 4 times. To cancel
Demonstration Mode press Micro power once, then
press Stop/Cancel 4 times.

Panasonic... | Answered on May 11, 2020

Not finding what you are looking for?
Microwave Ovens Logo

72,648 questions posted

Ask a Question

Usually answered in minutes!

Top Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9179 Answers


Level 3 Expert

85239 Answers

Cindy Wells

Level 3 Expert

6099 Answers

Are you a Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides