My microwave shuts off after 38 seconds. Even during the 38 seconds, there is no heating of anything in the microwave. I have not tried any fixes yet.
This model uses an inverter to produce high voltage. That symptom is an usually indication of a problem with the inverter or a bad magnetron. Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models. You should be able to locate a Panasonic-authorized servicer here: http://www.pasc.panasonic.com/WhereTo/FindServicer.asp?Pass=1 I would mention the exact symptom when you call so the technician can bring a new inverter or magnetron with him when he comes out to repair it. Might save you having it pulled into the shop.
Posted on May 10, 2007
Apr 12, 2014 | Panasonic NN-S563 Microwave Oven
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
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.
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.
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.
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.
If
the microwave runs for a few seconds and stops the thermostat might
be defective. Watch our video on testing thermostat
Feb 08, 2013 | Microwave Ovens
The magnetron may have either failed or
is not being supplied with the extremely high voltage required to run
it.
Make sure the !!!!capacitor is discharged!!!!!
before attempting any sort of repair.
Check the door interlock
switches first then the high voltage diode with either an AVO model 8
on high resistance range for short circuit, the feed fuse on the
primary of the high voltage transformer and then finally, the
magnetron is best checked by substitution.
Hope that helps.
Nov 21, 2010 | Siemens Microwave Ovens
Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Microwave Oven Basic Troubleshooting Tips
heatman101
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