Question about LG LMVM1945 Microwave Oven

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LG microwave oven

Our LG microwave oven (LMVM1945SB model) has been turning itself on. It appears that it is just the turn table on; not the microwave itself. It happens quite often. Customer Service does not help.

Posted by Teri Wagner on

  • 7 more comments 
  • Teri Wagner Jun 14, 2007

    no this issue has not been fixed. I've heard this is a known defect, but LG customer service doesn't tell me. Does anyone else have this problem?

  • elliswyatt Mar 27, 2008

    My microwave is doing the same thing. It's all the time though. Anytime the microwave door is closed the turntable is turning.

    I don't remember this happening prior to two weeks ago, but I may have just not noticed (new house). Is there some easy way to diagnose what's causing this problem? I'd like to get it to stop what it's doing as it's quite annoying.

  • Anonymous Dec 31, 2008

    My problem is that the microwave will start itself while cooking on the stove top. Model # lmv1680. Can anyone offer assistance with this problem?

    Thank you.

  • Anonymous Mar 13, 2014

    The unit turned itself on....twice so far. Then the buttons wouldn't work to turn it off. I had to open the door to get it to stop. Unplugged it, started over. Now some buttons work.
    I'm guessing new main board is needed.

  • Anonymous Mar 23, 2014

    The oven part works but the microwave does not. The light comes on and the table turns but no heat

  • Anonymous Mar 23, 2014

    No heat but turn table and light works. The oven part is ok, but the microwave does not

  • Anonymous Mar 23, 2014

    Lg model number is lmvm1945sb what does a F-9 mean

  • Anonymous Mar 24, 2014

    Turn off beeping

  • Anonymous Mar 24, 2014

    Rotating ring for model LMS-1221SS Microwave oven



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  • 9,179 Answers

It's usually a bad door switch or a broken door switch mount. Once in a while it's due to a board problem. 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:

Posted on Jun 15, 2007


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