Question about LG LMV1650ST Microwave Oven

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Door The oven doesn't work unless the door is held shut. Any suggestions on how I can fix this myself?

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This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:

We have the service manual for that model on our site at

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Feb 25, 2008

  • DJShepherd Jan 03, 2011

    The cost of the switches is very cheap, so i spent the 8 dollars or so and replaced all three switches. It is very simple to do and takes about 30 minutes. You may want to spend some extra time really giving it a good clean. My wife cleaned ours while I replaced the switches. It had a lot of grease.



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Why microwave fan turns on when I shut the door?

on most microwaves this is an indication that the door safety switch (closed) has malfunctioned some how , id suggest not trying to use it as you can become harmed if your inside this machine , if its a high end machine or part of a matching set of appliances then id have it repaired , otherwise im afraid unless you've got a relative in the business , its not going to be worth repairing as costs to repair will be greater than new one , that's my expiences with them anyways

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It would help to know the full model number and whether the oven is actually cooking by itself when you close the door, or if just the fan, light, and/or turntable is running when you shut the door.

But either way, the first place the start is with the door switches and mounts. My help file on those is here.

If those are good, it may need circuit board repair.

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

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If your microwave oven doesn't seem to work at all, check these: Fuses Door switch Fuses Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it. Door switch If the fuse isn't the problem, check the door hooks and the door-release button. When these are broken, the door switch doesn't activate, so the oven can't work

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its just the door switches playing up on you,,but is it worth getting it fixed? after all a new microwave onle costs from £50 up today,,
please dont try fixing it yourself unless you realy know what you are doing in there, there is 1000's of volts hiding in there even if its been switched off for days, and them volts will kill you,
have you ever seen a stun gun working???it realy hurts you,,,,,this microwave has the stun guns big brother inside of it,,and it wont stun you,,it will kill you,, is it realy worth that for a fuw bucks?

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