LG LMV1650ST Microwave Oven - Answered Questions & Fixed issues

dirty on/off key. open and clean with a brush

When you say it stopped working , you mean no lights or display etc. Then that can be a fuse but fuses blow for a reason. Find the reason if the fuse blew.

If it's cooking when the door is opened, that's dangerous, but any defect needs to be addressed!I would suspect a problem with a door switch or mount. The door switch help file is here.If we knew what your model number was, we could possibly give you a link to the service manual.So we can only give you generic help.See these links before proceeding: http://031d26d.namesecurehost.com/mwd/safety.txt http://031d26d.namesecurehost.com/mwd/disassembly.txt Here's a YouTube video showing how to remove a typical over the range control panel assembly in under 5 minutes. If this is not enough to help, then please post a new help request with your full model number from the tag in or on the oven, and detailed symptoms.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101 ][
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You can find your manual HERE
The parts breakdown can be found HERE

Hello,

if it does not power up, then it means its having a power problem. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby not making it to power on.

This unit must have a power supply board in it where power enters from the mains. A capacitor, fuse, diode, etc may have been defective on the power board and maybe that's why its not making the unit turn on. There might also be some disconnection or something, inside the unit which is not making it to power on.

To actually find out what's wrong, you need to disassemble the unit with a screw driver and check what's wrong. You will be needing a meter in order to test the components on the power board, once you detect any bad component, you can make necessary replacement at any electronics accessories store withing our vicinity. This is the only way by which you can detect the problem.

Of course, testing the power board with a meter will require someone that has the ability. So it you can't, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.

I wish you the best of luck.

Take care.......

You can ordre separate parts for the door or the whole door.

In searching for the service manual for this model, LG points us to the manual for model LMV1645 (here), so while it will be useful in disassembly and repair, I would contact Encompass here or call them toll-free at 866-779-5835 to be sure you get the right part numbers.

Good luck with it.

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

Look, i dont like to tell a non tech how to repair thir own microwaves as there are dangerous voltages sitting there that havent discharged.Step 1, if the magnatron goes faulty, it normally makes a loud growling sound and blows the fuses.So hopefully it isnt faulty. Most of the time i find the HVdiode damaged and to be safe, i replace the 1 micrifarad capacitor.as well. Before you replace that even, normally there is a single fusible wire that runs from the transformer to the cap. If that fuse is blown, have it replaced. Ask a friend who has a little electrical knowlege to help you please.

The lower door handle bracket broke and I'm trying to find out how to replace it. I already have the new bracket.

Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

15A & 20A ceramic fuses can be had locally in most grocery stores, hardware stores, home improvement centers, and big box or department stores.

Your fuse can be tested with a test light, continuity tester, multimeter, etc.

You should also check the thermal cutout / thermostat on the magnetron in your oven is truly dead.

If you need other parts, call 866-779-5835 toll free.

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

You need to replace the magnatron and the HV diode. Replacing the capacitor is also an advantage.

When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician.
If it is under warranty you are golden. If not, you should get an estimate, as many new microwaves are now in the 50 dollar to 99 dollar range

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: http://tinyurl.com/yzjozk

We have the service manual for that model on our site at
http://www.microwavedisplay.com/LMV1650_sm.pdf

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

MOM! When you say" Front Panel Door Seperates". Do you mean the front PLASTIC escuteon, or door cover? There is no seal as such like a gasket. The metal shield,or screen that you look through into your microwave is the seal. A microwave,( if it could be seen) is about the diameter of a pencil. It is neither gas, or liquid thus it cannot squeeze through openings smaller than it's diameter. So! the small openings or holes (That you look through) in the front screen of your microwave door are seen as solid metal by a microwave and the microwave is reflected back into the cavity. The only safety issue is damage to the screen.

Make sure unit is not plugged in. Use a Volt-Ohm Meter, on Ohms setting, and see if you have connection to the fuse holder. Put one meter lead on the BLACK ac wire, test the ac plug with the other lead (both sides) One should read. Do the same with the WHITE ac wire. One should read.If you get readings on both sides then AC Cord is good. Next check the fuse holder for signs of heat or dis-coloration. If found replace fuse holder. Always remember just because a fuse looks good does not mean it is good, and also I have replaced a fuse with a NEW bad fuse. It happens. To be sure test with meter.

Sounds like a mis-aligined, or defective door switch. I would suspect defective.

All microwaves have an internal fan. Generally, they work whenever the unit is heating. There may be a second 'overload' fan...that may be what they are referring to. If this is an over-range unit, these items have special sensors related to heat from the stove. My advice: don't mess with it if it is doing whatever else you want.

We don't have a layout for this one, but we repair these on a regular basis for customers nationwide with our guaranteed $39.95 service.

You can find more info at our site, linked here on Fixya: http://tinyurl.com/yzjozk