Question about GE JVM1870 Microwave Oven

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GE JVM1870 Runs, but won't heat up

Some advice that I have received has been that the magnetron, high voltage capacitor, or diode could be bad. Another person in this forum suggested that I check the fuses. After disconnecting the power I have partially disassembled the MWO (microwave oven). I do see two fuses - "Main Fuse" and "HVT Fuse" (High Voltage Transformer?). According to the factory schematics/parts list both fuses are 20A 65TL. Which one do you think could be causing my no heating issue? Should I replace them in any certain sequence? Any other concerns that I should be aware of prior to trying to fix the problem myself? At the end of the day... I can't/don't to afford to 1) buy a new MWO as some have suggested or 2) pay extremely high repair charges for a factory repairman regarding a hopefully simple problem that I could fix. Any help that you could provide would be greatly appreciated as my wife is getting upset that she has not been able to use her MWO for a couple of days now.

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  • Anonymous Nov 03, 2007

    Everything on my MWO works except it doesn't heat up.

  • JayMan152 Nov 12, 2007

    Is it worth repairing or would it be better to buy a new microwave?

  • Anonymous Jun 30, 2008

    I have a samsung mivrowave oven. I runs as normal with the normal humming sound but it wont heat up the foods.Is this a problem I could fiux myself? Do magnatrons usually give problems as I also have a GE unit which does not work at all.

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  • GE Master
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If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your full model number (without the suffix) here: http://tinyurl.com/gv383

Posted on Apr 10, 2007

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  • Master
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My brother check the magnetron and the high voltage cap they are bad.or you got to take your microwave to a tech replace both component.good luck.

Posted on Apr 03, 2007

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It has a wiring diagram and a schematic which shows you how the components are connected.

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You can find links to helpful exploded view diagrams and part ordering help here.

I'd recommend that your bookmark this link to your favorites.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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hello there
here are some things to look for
If the power is on, but it does not work check to make sure the door closes and aligns properly. Microwave door switches have metal terminals on the end that make contact with the door hook or latch. This completes the circuit which allows the microwave oven to run and without this contact the microwave will not operate. A simple misalignment might be breaking the circuit causing the microwave not to operate. If you suspect that the thermal fuse has blown, call a professional appliance repair person. Even an unplugged microwave oven can kill or seriously injure someone. This is because there is a high energy capacitor inside the microwave oven case. If it is not discharged properly, you could be electrocuted.
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