Question about Panasonic NN-H765 Microwave Oven

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Stops runing stops running after a few seconds and resets to no time for cooking being set

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I, too had the problem with a Panasonic. From the info gathered on the web it boiled down to two problems: door switch or magnatron. Working with an electrician friend we replaced the entire door switch and everything checked out....except it only worked for 3-4 seconds. So, I gather it's the latter. As such, Fubzu answer, albeit, brutal as it is probably the right answer.I'm off to find a new one. BTW I have a nice boat anchor for someone! :-(

Posted on Apr 28, 2010

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Get a new one?

Posted on Apr 27, 2010

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1 Answer

Microwave stops after 59 seconds


Check that a "favourite" setting has not been selected. The unit may think that is the time that you want to cook. Im not sure about your model but see if there is any clear or cancel buttons to clear any pre programmed selections. If not, unplug the machine for 15 minutes to reset the controller and try it again.

Nov 25, 2013 | Electrolux Microwave Ovens

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Burning problem in cooking


Start out with just a few seconds if you are heating something and increase it if it isn't heated through, Sounds like the wattage is high on your unit or you are using too much time. Don't over do it. Just use a few seconds or a few minutes. Don't use the pre-sets if they are burning your food. Just punch in the seconds or minutes yourself until you learn how much time you need for the food you are cooking or heating.

Feb 14, 2013 | Microwave Ovens

1 Answer

GE spacemaker microwave turns off during cooking and display goes black


Step 1:


Door Switch




If the microwave runs for a few seconds and then shuts off, a door switch might have failed intermittently. Check each of the door switches for any signs of overheating, arcing, or burning. Also check each of them for continuity. Replace any of the switches that is visibly damaged or that only has continuity intermittently


mwswitchtest2.jpg

Step 2:

Main Control Board




If the microwave runs for a few seconds and stops there may be a short circuit in the main control board. Check other components first, these boards are often misdiagnosed.


Touchpad and Control Panel




If the microwave runs for a few seconds and stops the touchpad and control panel might be defective. There are several other components that can cause this problem, be sure to check any other components before replacing this board.

Touchpad




If the microwave runs for a few seconds and stops the touchpad might be at fault. This is not common. Generally speaking, if the microwave display is working and some of the buttons respond correctly but some don't, the problem is with the touchpad.

High Voltage Transformer




If the microwave runs for a few seconds and stops the high voltage transformer might have an intermittent short. This is not common. Check other components related to the microwave symptom first.

Thermostat




If the microwave runs for a few seconds and stops the thermostat might be defective. Watch our video on testing thermostat

Step 3:

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Step 4:

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Step 5:

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Step 6:

use the DVOM tester and fix it. God bless you

Feb 08, 2013 | Microwave Ovens

1 Answer

MW8119SB cooks when door is closed regardless of settings


Clear the cook cycle when you remove the food. Some microwaves pick up where they left off, so you don't have to keep pressing buttons.

Aug 07, 2009 | Emerson MW8778 Microwave Oven

1 Answer

Runs for a few seconds then shuts down. Sometimes will work ok then next time shuts off in a few seconds.???????


See if this describes what's happening:
  • Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector
If so, see http://www.microwavedisplay.com/safety.txt , http://www.microwavedisplay.com/disassembly.txt and http://www.microwavedisplay.com/doorsw.txt

If a switch is all you need, we offer a universal type for only $5 postpaid which you can order here.

Otherwise, if the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

It may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.


If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.


If it stops after 7 seconds, it has a problem with the inverter.


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

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.

In Canada, 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.

Jul 09, 2009 | Panasonic Microwave Ovens

3 Answers

GE Spacesaver XL 1650 microwave shuts off after a few seconds


this would be the digital control board that would need to be replaced

Nov 27, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Panasonic NN-S262SF stops cooking after 3 seconds


inverter problem the transistor 1M30D is shorted

May 28, 2008 | Panasonic NN-S262SF Microwave Oven

1 Answer

Microwave works for 30 seconds and then turns off


The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

Let us know if the hard reset doesn't fix it.

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

Apr 23, 2008 | Microwave Ovens

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