There are 3 fuses in that microwave. I had a similar issue. The one
that I had to replace was the little ceramic fuse that is in line after
the big fuse which is connected to the main line. I couldn't find
the ceramic fuse but I replaced it was a glass one about a year ago and
it has been working since then. The fuse if located on the right front
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Hello there: If you have all ready changed out the fuse and it has happned again i would first check to see that the fuse is the right one for the machine (i am sure that you did this but please recheck ) next i would look at the controle board as the next culprit it maay be failing expecially if there were any pops ar sparks that was noticed before the initial failure. Also check to see if all of the wires by the board a re not loose or looked burned ar if there is any grease or anything like this around the area And finally check to see if the plate is turning ok and not sticking cause this would cause the microwave to overload and it wil make every fuse you put in there fail after just a couple of uses ok SO please try all of these things that i have explained to you I hope this is very helpful for you. Best regards Michael
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the unit, your symptoms (dead).
Same thing happened to our unit. My wife had started cooking potatoes and we left house for an hour. Came back and unit was dead, nothing worked. Verified power @ plug. Unplugged, pulled control panel and checked fuse which is mounted @ top of circuit board (will now refer to as CB), back side of interface panel. It passed continuity test. Inspected wiring and was all intact, no sign of burn thru. Varistor visual also looked good, no discoloration or burns. Removed (5) fasteners that hold CB to interface and inspected back side. Noted minor "blackening" @ pin location #1 of the (5) pin plug immediately beneath fuse. Resoldered because connection looked poor. Plugged back in and tested, all features worked correctly!