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The MICROWAVE STOPS BEFORE THE TIME SET - Panasonic Microwave Ovens

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  • Panasonic Master
  • 9,047 Answers

<p><font face="arial,helvetica,sans-serif"><span style="font-family: Arial;"><b>
Diagnosing Panasonic microwave oven stoppages:</b><br>
<br>
If it stops after 22 seconds, that means the controller has detected a problem,
usually a problem with the inverter, controller,&nbsp;magnetron, or a bad connection
from one or the other.</span></font><br>
<font face="arial,helvetica,sans-serif"><span style="font-family: Arial;"><br>
If it stops at 16 seconds and is a sensor model, it probably has a defective
humidity sensor.<br>
<br>
If it stops after 7 seconds, it has a problem with the&nbsp;inverter.</span></font><br>
<font face="arial,helvetica,sans-serif"><span style="font-family: Arial;"><br>
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.<br>
<br>
Or see if this describes what's happening:<br>
<br>
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:<br>
<br>
<a rel='nofollow' href="http://031d26d.namesecurehost.com/mwd/safety.txt">
http://031d26d.namesecurehost.com/mwd/safety.txt</a></span></font></p>
<p><font face="arial,helvetica,sans-serif"><span style="font-family: Arial;">
<a rel='nofollow' href="http://031d26d.namesecurehost.com/mwd/disassembly.txt">
http://031d26d.namesecurehost.com/mwd/disassembly.txt</a></span></font></p>
<p><font face="arial,helvetica,sans-serif"><span style="font-family: Arial;">
<a rel='nofollow' href="http://031d26d.namesecurehost.com/mwd/doorsw.txt">
http://031d26d.namesecurehost.com/mwd/doorsw.txt</a><br>
<br>
It may be a loose connection in the wiring between the inverter,&nbsp;magnetron,
and/or control board, or maybe one of those components has failed.</span><br style="font-family: Arial;">
<font face="Arial"><br>
</font><span style="font-family: Arial;">Due to the complexity and lethal
voltages used and produced in inverters, I do not recommend that an
inexperienced person work on these.</span><br style="font-family: Arial;">
<br style="font-family: Arial;">
<span style="font-family: Arial;">You can </span>
<a style="font-family: Arial;" target="_blank" rel='nofollow' href="http://www.pasc.panasonic.com/WhereTo/FindServicer.asp?Pass=1">
find an authorized Panasonic servicer here</a><span style="font-family: Arial;">.</span><br style="font-family: Arial;">
<font face="Arial"><br>
</font><span style="font-family: Arial;">In Canada, you can </span>
<a style="font-family: Arial;" target="_blank" rel='nofollow' href="http://panasonic.ca/english/customercare/servicentrelocator/default.asp">
find an authorized Panasonic servicer here</a><span style="font-family: Arial;">.</span><font face="Arial"><br>
&nbsp;</font></font></p>

Posted on Oct 17, 2013

  • GIUSEPPE MARTIN Oct 18, 2013

    Good morning, Thanks for the reply, I am aware of the danger but I have experience in electronics, I checked the inverter board, power supply, and I found a diode UX-C2B in short, I replaced it I tried again to run the microwave and it is broken again, quancosa is definitely in short, I checked the condensers of power but I am ok, I also checked the power mosfet inverter with special tool but even these are ok I guess is because of the magnetron is broken or short but I do not know how to measure. The cause of the non-operation of the microwave think it was a layer of dust which closed the ventilation area thus bringing high temperatures within the oven. Do you think it could be the magnetron? you know how I can understand if the cause is his?

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