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Stopped heating Runs as normal for 20 seconds does not generate any heat then turns it self off

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9047 Answers

SOURCE: NN-T990SA Panasonic Microwave Stopped Heating

This model uses an inverter to produce high voltage instead of a convential transformer system. While an inverter (switched-mode power supply) is more efficient from a power consumption standpoint, it is more complex, thus more statistically prone to fail. These should only be examined and worked on by someone who has the necessary technical qualifications. Seriously. Often the machine-soldered connections in a microwave inverter are too weak, so they eventually fail, especially if heat is high in the area. They sometimes fail catastrophically. When not catastrophically damaged, you may hear clicking or squealing and may smell an electrical odor, which is sometimes obscured by the cooling fan. Some manufacturers do not encourage or assist technicians to repair microwave inverters. Most offer the inverter as a whole assembly. But sometimes that is actually cheaper than the time and labor required to fix the old one. If a technician is willing and able to troubleshoot and repair the inverter to component level, it will may be expensive, but may be worth it, especially if he or she will resolder and reinforce connections as needed as part of a thorough repair. That could easily make your inverter beter than a new one! You might be able to get some verbal estimates if you call Panasonic-authorized repair shops and ask then specifically about inverter repair and inverter replacement costs for your model number.

Posted on Dec 23, 2006

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bestdarngood
  • 3037 Answers

SOURCE: Panasonic NN-S563 no heat

the magnetron has gone bad, not worth it to repair, go out and buy a new microwave. A $40-50 dollar one will last quite a while.

Let me know if you have any questions, just don't buy GE.

Posted on Oct 20, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: oven won't heat and shuts down after approx. 20 seconds

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter or a bad magnetron.

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

You can find an authorized Panasonic servicer here.


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

Posted on Dec 18, 2008

  • 686 Answers

SOURCE: my GE spacemaker microwave doesn't heat up foods.

IT COULD BE A NUMBER OF THINGS RANGING FROM DIODES TO CAPACITORS TO YOUR MAGNATRON OR THERMOSTAST OR TRANSFORMERS. IT'S DIFFICULT TO DIAGNOSE WITHOUT SEEING THIS MICROWAVE. YOU MAY BE BETTER OFF GETTING YOURSELF A DIFFERENT ONE.

Posted on Apr 12, 2009

heatman101
  • 43501 Answers

SOURCE: Our Kenmore microwave - which

Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic
Microwave Oven Troubleshooting Tips

heatman101

,.,.,.,.,.,.

Posted on Feb 24, 2011

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1 Answer

Fan failure /Intermittent heating


quite likely your microwave is trying to prevent it self from self destruct, because if the fan is not keeping the electronics components cool enough while its running the high limit thermo will disconnect power from the heating circuit, if the fan is not working it should be replaced , that's a techs job.

Feb 12, 2014 | Microwave Ovens

1 Answer

Microwave runs but doe not heat


follow this test and fix it. God bless you
  1. Check the power diode This electronic component is responsible for transmitting current in one direction. If the diode becomes defective it will cause your microwave to not heat. Test the diode and replace it if necessary.
  2. High voltage capacitor Responsible for storing electricity, this part is a key component in any microwave. Remove, discharge, and test the capacitor to determine if it requires replacement.
  3. Damaged magnetron Responsible for generating waves and producing heat. When your microwave is no longer heating properly, replacement will be required.
  4. Thermal Cutoffs Examine the thermal cutoffs on both the magnetron and the oven itself. Take off one of the leads and using a volt-ohm meter on RX1, check the terminals. If you get a result other than zero, replace the thermal cutoffs.

Nov 26, 2013 | GE JVM1190 Microwave Oven

2 Answers

Microwave not heating food model MA795B


1 door interlock
2 diode
3 magnetron
4 heat censer
5 dry joint on relay on timer board
6 Re: Jeff

Apr 12, 2012 | Goldstar Microwave Ovens

1 Answer

GE microwave just stopped working a yesterday. It still runs, fan motor and light still work, but it doesn't heat anything up.


The magnetron is the likely cause, but there are two other parts that can be a factor, the high voltage capacitor and diode, they work together with the magnetron to generate the high voltage and heat the food. If a professional is brought in to assess with parts and labor, it will be high.

Feb 10, 2011 | GE Microwave Ovens

1 Answer

Microwave runs, turntable turns, fan runs, but does not heat,


No heat means the magnetron circuit has failed. It is the part that generates the microwaves to heat the food. Usually not worth fixing since the magnetron costs nearly as much as a new oven. To diagnose, if the oven is on, you will hear a loud buzzing sound if the magnetron is shorted.

Jun 30, 2010 | Sunbeam SMW777 Microwave Oven

2 Answers

My Russell Hobbs microwave will not generate heat


If everything else is normal, the trouble may be a failed magnetron tube (the microwave source), problems on the control circuit board, or parts in the tube power circuit that are bad. It's also possible a door switch can be at fault, but this usually keeps something else (fan, turntable or light, most often) from running as well.

Microwave servicing is best left to professionals. There are potentially deadly voltages present, and a chance of microwave leakage if repairs aren't done correctly. Take the oven to a shop for an estimate, or just consider replacing it if it isn't a built-in, an over the range unit or a high-end countertop model.

Feb 02, 2010 | Microwave Ovens

1 Answer

My GE spacemaker microwave doesn't heat up foods. There is a slight bit of heat generated but not much. All timers, lights, etc. work normal. It is a GE model jvm1440. It is about 3 years old. The problem...


IT COULD BE A NUMBER OF THINGS RANGING FROM DIODES TO CAPACITORS TO YOUR MAGNATRON OR THERMOSTAST OR TRANSFORMERS. IT'S DIFFICULT TO DIAGNOSE WITHOUT SEEING THIS MICROWAVE. YOU MAY BE BETTER OFF GETTING YOURSELF A DIFFERENT ONE.

Apr 11, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Kenmore microwave stopped heating


simply stated.. if it fails to cook.. you may have either a bad magnetron tube ( that's the part that generates the microwave energy that cooks the food) or the filament transformer feeding that magnetron is bad. In either case.. you're probably better off replacing the entire appliance than repairing it.. Hope that helps...

Aug 30, 2008 | Kenmore Microwave Ovens

2 Answers

Panasonic Microwave NN-A770S getting hot on right side externally


If you described this to Panasonic very carefully, and they said it's normal, then I would say keep using it until such time that you get other symptoms. The inverter has some parts mounted on a large chunk of aluminum called a heat sink. It draws the heat out of the parts and the heat radiates and/or convects away. This keeps the circuit parts from overheating. As long as you have good air flow through the vents, it sounds okay.

Sep 13, 2007 | Microwave Ovens

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