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Repair and disassembly guides for GE Microwave ovens.

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GE Model JVM3670Sk06 has no power? Fuzes not blown?

Hi. I've read posts and watched youtube videos on possible solutions but i'm stumped. I have a GE microwave, model JVM3670SK06 that has no power. The outlet has power 120v (verified on multi meter). I ordered a new control board thinking that might be it but still no power. I checked the 2 fuses (HVT and normal) fuses that are simply cylinder fuses 250v20A. Each of them showed continuity. I checked the 4 thermal fuses in the microwave. All tested "OK" in that 3 of the fuses had continuity and 1 tested "open". I ordered a new replacement fuse but upon arrival, it was "open" as well, which made me realize it's normally an open fuse. I checked the door switches to ensure they were functioning properly, which they were. With door open, 2 switches showed open and 1 showed closed. with the door closed, each showed the opposite. I don't know what is the next step to check? There is no power to the microwave (no lights turn on, no buttons work, no display). Any suggestions?

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Did you get any good results with your microwave repair? I’m repairing a lot of things but this one gives me a problem.

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That particular microwave has several “round” fuses located inside. I ended up buying replacement fuses and that fixed the problem. I can’t remember which one it was, but it was a blown fuse that prevent power to the microwave. After replacing the fuse, it worked fine.

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This is very helpful many thanks

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What were the round fuses called and where were they located? I have the same problem and this solution might help.

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For GE model jvm1871sk03 - might apply to other models, there is a hidden thermal fuse (GE part #WB27X10810), some call it a thermostat cut-out, that is very hidden on the top of the unit. On the part diagram, it is #44.

After removing the outer case, you will need to remove the middle metal cover, and the left hand part of the multi-compartment plastic cover. I did not need to remove the entire plastic cover. The fuse is located on the top left side in front of the left side of the fan wheel. You may need a flat headed screwdriver to pry off the lead connections from the fuse.

*Please note, as other sites have mentioned, the other thermostat (GE part #WB27X10194) located on the right hand side of the unit along with the other fuses, will test open with a multimeter. Therefore, do not conclude that this part is bad because it does not register a continuity beep.

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Hi! I know this sounds silly, but did you check for any cuts or tears in the cable that connects your microwave to the wall outlet? Was the connector or cable over stressed and misshapen? If you decide to check the cable from the inside of the microwave, be careful and be very cautious if there is a large capacitor near by. It can store a lot of charge and be lethal.

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Try plugging it into another outlet (test the outlet first with a blender?). You might want to check your circuit breaker (you may find that if you toggle some switches, one switch will actually take less effort to flip, this is because it is blown, but it doesn't set the switch to off when it blows. I have these types so it is really hard to tell if it's a circuit breaker just from looking at it). Trying other outlets is one one to check if it is a breaker issue. I had one outlet in my kitchen with burn marks, that didn't work but the plugin right below it worked fine.

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Sounds like the smartboard( noise filter board) might be shot.

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Where was the fuse located?

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Check the door switches. $7.25 fix. Youtube has videos.

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Check the out the main board output. If the control board is new your next stop is the main board. If the lights would come on when you open the door I would suggest a whole new door assembly since I don't think they sell the touch pad separately.

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Out of all the answers no one said anything about the transformer so try that because they will go out also

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The only transformer to test on this model is the high voltage transformer for the magnetron. Which does not power the lights, display, fan or main board. The only other transformer is located on the control board which was already replaced.

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chavkev さん、ありがとうございました!
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