I have an LG microwave Model number: LMV1638SW The problem I am having with it. Let's say I am trying to warm up a cup of coffee I put it the microwave for 2 min., press start it runs maybe 30 seconds then the light and heavier part of the sound disappears. A few seconds later the lights and sound comes back. A few seconds later the light and sound disappears again. This may happen three or four times during the two-minute cycle. Checking the temperature of the coffee in the cup it is warm but not hot. So it's like warming/cooking part of the time but not all the time. I know the light has nothing to do with it. Because I have taken the light out and tried and it does exactly the same thing. I have been told that it could be the thermostat. I have opened the microwave and found one on the lower right-hand side behind the control panel, touching the sheet metal panel on the bottom. Then I found another one on the top on the right edge of the exhaust fan vent in the rear. I have purchased and changed the two thermostats. Part numbers 6930W1003J and EBG60666101. And still have the same problem where it intermittently warming/cooking. Do you have any suggestions on ways to test/troubleshoot this problem?
I would try troubleshooting the "defrost circuit". The behavior sounds like the microwave is cooking in the defrost mode, where it actively cooks then stops allowing the food to rotate and the heat to spread then actively cooking again.
SOURCE: GE Profile Spacemaker 2.0 Microwave
Clean the inside top of the microwave. There is food stuck to the top and is killing your microwave cook time. I had this same problem and was fixed $125.00 Later. Good luck
SOURCE: Panasonic Model NN T964SF inverter
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.
In most cases, this is a problem with the inverter or a bad 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 you with free advice and we'd appreciate your thoughtful rating of our answer.
SOURCE: I have a F6 error
F6 on these models means that the cook relay on the control circuit board is shorted, and it is cooking anytime the door is closed.
We
regularly repair such control units for customers nationwide by mail
for $39.95 postpaid with a one-year guarantee.
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 prefer, you can buy a new circuit board (part number 8169733 for $150.27) from the Pros here.
They're our favorite supplier.
We're
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
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