GE Model JVM3670Sk06 has no power? Fuzes not blown?

Question

GE Microwave Oven

Repair and disassembly guides for GE Microwave ovens.

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chavkev @chavkev

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crwdns2931729:0crwdne2931729:0: Huk 10, 2017

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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.

crwdns2934271:0Nhl 12, 2019crwdnd2934271:0 Jean Bouchard crwdne2934271:0

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chavkev @chavkev

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crwdns2931729:0crwdne2931729:0: Nhl 12, 2019

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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

crwdns2934271:0Nhl 12, 2019crwdnd2934271:0 Bouchardjean@hotmail.ca crwdne2934271:0

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

crwdns2934271:0Huk 28, 2019crwdnd2934271:0 bobo126 crwdne2934271:0

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.

crwdns2934271:0Yan 3, 2021crwdnd2934271:0 Roj Horowitz crwdne2934271:0

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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. — Jean Bouchard
What were the round fuses called and where were they located? I have the same problem and this solution might help. — bobo126
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. — Roj Horowitz

score 1 · Answer 1 · 2017-11-10T17:46:00-07:00

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Anthony Kouttron @salvagedcircuit

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crwdns2931729:0crwdne2931729:0: Huk 10, 2017

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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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Venancio Zuniga @venancio crwdns2934065:0crwdne2934065:0: 430 10 1 · Answer 2 · 2018-02-11T14:29:21-07:00

Venancio Zuniga @venancio

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crwdns2931729:0crwdne2931729:0: Yan 11, 2018

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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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Jonathan Strahan @jstrahan crwdns2934065:0crwdne2934065:0: 1 1 · Answer 3 · 2017-11-29T19:08:35-07:00

Jonathan Strahan @jstrahan

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crwdns2931729:0crwdne2931729:0: Huk 29, 2017

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

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Where was the fuse located?

crwdns2934271:0Nhl 12, 2019crwdnd2934271:0 Jonathan Strahan crwdne2934271:0

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Jimmy @therifleman crwdns2934065:0crwdne2934065:0: 1 · Answer 4 · 2019-02-12T18:29:54-07:00

Jimmy @therifleman

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crwdns2931729:0crwdne2931729:0: Yan 12, 2019

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

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Jonathan Strahan @jstrahan crwdns2934065:0crwdne2934065:0: 1 1 · Answer 5 · 2019-09-05T12:34:20-07:00

Jonathan Strahan @jstrahan

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crwdns2931729:0crwdne2931729:0: Ndz 5, 2019

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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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Rodney @acron crwdns2934065:0crwdne2934065:0: 1 · Answer 6 · 2019-09-20T12:06:19-07:00

Rodney @acron

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crwdns2931729:0crwdne2931729:0: Ndz 20, 2019

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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.

crwdns2934271:0Ndz 20, 2019crwdnd2934271:0 Jonathan Strahan crwdne2934271:0

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GE Microwave Oven

GE Model JVM3670Sk06 has no power? Fuzes not blown?

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