Question about Microwave Ovens
Total loss of power while cooking, power comes back on after around 30 minutes and then will cut off agian while attempting to use microwave
First, is the internal cooling fan running when you cook?
The cooling fan (not to be confused with the hood / exhaust / vent fan) is critical to keeping the magnetron from overheating.
The magnetron is probably overheating and causing the magnetron thermostat to open.
Then when it cools, it closes the circuit and allows power through again.
This can be due to a failed cooling fan or a failing magnetron.
One way to test this is to place a cup of water inside and cook on the lowest power setting for 2 minutes and see if it makes it all the way through.
Then try it again on full power.
If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.
If you or someone you know wants to look into this, we have critical safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa.
We even have a video on our site that shows you how to safely & easily remove the control panel assembly in less than 5 minutes so you can check out your oven.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.
We're happy to help you and we'd appreciate your thoughtful rating of our answer.
Posted on Jul 23, 2008
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Posted on Jan 02, 2017
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