Microwave shuts off during heat cycle and will eventually reset. what is the problem?

clear and re set cooking cycle

Possibly a bad oven temp sensor. If the uinit doesnt read a temperature it will shut down to prevent a fire or over heating. The temp sensor is a thermister A temperature variable resistor that changes value as the temp changes. so If the main board doesnt get a response within a vertain resistance range it shuts things down. Sometimes since those parts are in the actual cooking area and subject to the heat and steam from cooking they can rust and break, or just get old and break. Or slam the door and break, you get the idea!!

The microwave has a short. You need to replace it, there's no real fix for it. Keep it unplugged and dispose of it. It will eventually catch on fire, and this isn't an exaggeration.

Also the fact it is a convection oven could mean the oven temperature sensor is not picking up the oven temp. it is not telling the machine it is there by the board seeing its resistance, the unit will shut off as a safety feature. The oven sees temperature by reading the value of a temperature dependent resistor. As the temperature changes so does the value of the component ( oven temp sensor) that way the unit determines the temperature inside the unit. Sometimes those sensors will break since they are in the area with the heat and moisture, they get old and break.

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Check here

http://www.geappliances.com/search/fast/infobase/10000007.htm

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online.

You have a bad or loose magnetron.

See this FixYa solution. even if your model number is different.

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

Please check your door safety interlock switches.

When you open the door with the oven running, to check stuff, there is an arc on the tiny contacts. Eventually, they burn and are not able to tell the oven that the door is shut. Forget what you know about the door, the oven has to be sure the door is shut and it uses these little switches for that purpose.

There are other reasons for no heat, this is the most likely one. Check them with a volt/ohm meter. If failed, get replacement from Panasonic, your appliance parts distributor in your town, FixYa.com advertiser, Radio Shack or www.repairclinic.com

Good luck with your repair.

Thanks for your interest in FixYa.com

I have not gotten a solution for this problem. I thought your website said one of the experts would respond for free. Seems like that must have been a hoax to give you the opportunity to sell me something. Shame on you!

I am still waiting for the free assistance, as advertised.

Dave

The oven may not be seated properly. check the bushes at the bottom.

The cooling fan is a must!

Otherwise, the magnetron will be ruined, and that drives up the repair cost.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can order parts here: https://www.mcappliance.com/partorder.aspx

To contact Magic Chef about getting an *authorized* servicer, see: http://www.mcappliance.com/contactus/contactus.asp

We're happy to help and we appreciate your thoughtful rating of our answer.