Question about Panasonic NN-T783SF 1350 Watts Microwave Oven

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Microwave turned on when empty

My husband turned the microwave on (instead of the timer) while it was empty and it "cooked" for 18 minutes. There was a funny smell--simliar to rubber burning--and the glass rotating plate cracked. I'm concerned about any unhealthy emissions (I'm already chemically sensitive from carbon monoxide poisoning). Also, I'm wondering if the safest option is to just dispose of it.

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  • Panasonic Master
  • 22,114 Answers

The magnetron will be damaged and now emit low output as there is nothing to absorb the energy.
I would dispose of it and get a new one.

Posted on Sep 01, 2017

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6ya6ya
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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9047 Answers

SOURCE: Burnt Rubber Smell then Off

That would most likely be a problem with the inverter or magnetron.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer.

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

Posted on Jul 08, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Panasonic Microwave Model NN-S454 glass tray does not rotate

I would suspect that you have trouble with one of the door switches or its mount.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If the switch mount is broken, it's usually more economical and safer to add a dab or two of hot glue to the mount to secure the switch. Let it cool for about 30 minutes before using.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

See: http://www.microwavedisplay.com/safety.txt and
http://www.microwavedisplay.com/disassembly.txt

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

If you only need a switch, you can order a universal type here for $5 postpaid.

You can order other parts for this brand at Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases in about a week or so.

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

Posted on Mar 06, 2009

rteemon
  • 578 Answers

SOURCE: The carbon monoxide detector beeps when I run the microwave.

uplug the micro wave for the same amout of time the dector go off and see what happen if it goes off check the battery and replace them and do the same as above test to see if dector is not working properly

Posted on Jul 01, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: Panasonic Microwave Model NN-H765BF will rotate

The turntable system typically consists of the motor, the coupler, the turntable support with rollers, and the tray.

Here is a video of how a turntable motor should sound when you rotate it by hand.

If yours is not set to be off via the control panel, and it won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.

To replace either, you need to unplug power, then remove the bottom cover of the oven.

You can order parts Encompass here or call them toll-free at 866-779-5835.

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

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

Posted on Aug 23, 2010

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1 Answer

How do I know wattage for 1974 recipes and convert cooking time to todays microwave (1200)


A 1974 Microwave Oven is probably not putting out more than 600 watts. You need to do a power test to determine it's actual power output. Place a 2 cup glass measuring cup with exactly 500 mL of cold water. Record the starting temperature of the water. Run the microwave on 100% power for 18 seconds, using a watch or timer, not the timer on the unit. Take the water out and stir it to make sure that there are no hot or cold spots in the measuring cup. Record the new temperature. Example: 78.4-64.1= 14.3.
Multiply 14.3 X 38.75= 554.125. The power output is 554 watts IEC. If the recipe is set for a 1200 watt unit, and your is almost 600 watts, obviously, you would double the cook time. Since this is rough, you need to experiment a bit. If the cook time is 10 minutes, check your product at 8 minutes. Be sure to push the stop button before you open the door when it is in cook mode. This will save wear and tear on door switches and leave the remaining cook time on the timer. Let me know how this works out for you..

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I thought I was running the timer, but was actually cooking empty for about 30 minutes. Is my microwave dead forever? There is no digital readout


yeah you blow something
check the rectangular plate inside the cooking chamber that its not damage.
Second replace the magnetron.

Thanks

Please rate my work

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Oven won't function after 5 minutes of cook time with nothing in


It's posible that since it was running empty, the magnetron overheated and a thermal cutout or thermostat located on the magnetron opened.

Magnetrons may be protected by a thermostat, which will reset when it cools, or a thermal fuse, which is a one-time use device. It is also possible that in some cases, a thermostat will fail when opened.

In the worst case the magnetron may be damaged due to running empty.

I hope this will solve your issue.

Good Luck.

If my solution proves useful please accept it.

Regards
Arjun

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