Question about LG LMV2055ST Microwave Oven

2 Answers

LG LMVM2055: Cooked itself?

My LG microwave is about 18 months ol and worked fine until last night. My daughter used it, removed the item, closed the door, and left the room. She noticed a sound when she closed the door, but thought it was the fan. Less than a minute later my wife smelled something burning/electrical and quickly traced it to the microwave, which was empty but apparently running. She hit the stop button - no response. She opened the door, it stopped; closed the door, it started again without pressing a button. I came in to investigate and found that, when the door was closed it automatically started the "humming" sound that the unit typically makes when turned on - but, no fan noise (fan not on). No response from any buttons, though the display lights still work (shows time of day, no error codes or anything). I pulled the plug in the upper cabinet. The inside of the microwave was very hot. The middle/top of the right inside wall (perferations on wall) was extremely hot (could only hold fingers on it for few a seconds, then too hot to touch). The unit had a burning electrical smell.

I bought all new LG appliances when I refurbished my kitchen 18 months ago, and this is the second LG appliance to fail in the last three months. A serviceman had to replace the pump module in my LG dishwasher to the tune of ~$300 (just labor, the part was still covered) 3 months after the warranty expired. Now this. He said LG uses "cheaper" parts than other mfgrs. I think I'm beginning to agree.

I think the service call/diagnosis was $75. One yr p/l warranty is expired. May not be economical for service call, but might be if I could do repair myself. Any ideas on where to start? Thanks in advance for any help.

Posted by on

  • IREngnr Apr 19, 2008

    Could I have been nuked? Should I buy a Geiger counter?



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 328 Answers

Alternatively and more seriously... Since this is obviously a life threatening dangerous kitchen appliance, I think you should call the service centre / LG with this query and let them know of the problems which have occurred. But be nice, relaxed and above all detailed with the problems you have.
Bear in mind also any manufacturing guarantee you have with this appliance and underline the fact that this is not the first LG appliance you have bought new which has been faulty. Ask if there has been a product recall for example. 
If they dont lever the charges of call out or an offer which is level to you and LG, tell them you'll make a video of your experience and put it on You Tube. Thats when you can start to become irate!
It definately sounds like there is a internal fault and this will not be repairable by you or at the least should not be attempted by you. Sometimes oven can do this if there is a programming fault and this definately sounds like the problem with the LG; I had a similar problem with my Sharp oven. Now I have a more mechanical cheap oven which does the job (Panasonic). 

Posted on Apr 19, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 472 Answers

First you will need to answer a few quick questions between yourselves.

  1. Do you have life insurance?
  2. Is it enough for the wife and kids to survive on
  3. Whats the number for 911
After you answer all these questions, then pick up the microwave, and take it for a long drive.
There are bits inside there that will happily kill you days after it has been turned off. (some even weeks)
For the cost of a replacement in this case, it's not worth it.

Posted on Apr 18, 2008

  • Peter Thompson
    Peter Thompson Apr 19, 2008

    Please forgive my arrogance..

    What I should have said was, Would youlike me to fly to your country and repair it for you. I should be there in say 12 hours or so.

    No wait, I have a better idea, rip it apart. Now go down to your garage and grab some nice conductive screwdrivers (really long ones so you don't miss anything), then proceed to tap the big cyclinder looking thing (thats a technical term for capacitor).

    After all, tapping stuff makes it all better. Pending you survive the experience, then in say ooooh 3 months while you are sifting through the ashes that was your house, please, think of me.

    Good luck



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

LG LMVM2055 1000 Watts Microwave Oven - Microwave turns itself

You likely have a shorting membrane keypad.

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or at least leave the door open.

It's better not to use it, but if you do, as always, one should never leave a microwave unattended while cooking.

The service manual is here.

To order Goldstar / L.G. parts, visit Encompass. You'll probably have to call them at 866-779-5835.

They can give you clarification on whether you have to order the membrane keypad separately (see this guide) or the whole front door panel (more costly but much easier).

They can also give you part numbers, which the manual does not have.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Dec 16, 2011 | LG LMVM2075 1000 Watts Microwave Oven

1 Answer

Lg lmvm2055 loud, no heat

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

Microwave Oven Basic Troubleshooting Tips

heatman101 ';

Sep 06, 2011 | LG LMVM2055 Convection/Microwave Oven

1 Answer

The # 1 button and # 2 button dont work on the key pad. Cant set any time using the 1 and 2.

Sounds like a replacement control panel will be required. They do fail and usually are not a serviceable part.
Call an engineer for fitting.

Jan 19, 2011 | LG LMVM2055 Convection/Microwave Oven

1 Answer

My LG LMVM2055 just stopped working. i have checked the fuse box and everything is fine. i unplugged the microwave and plugged it into a working outlet and it still does not work. is there an internal...

yes there is a fuse behind the control panel area. where the cord goes inside the unit there is a fuse bloack and a 20 amp fuse ...may have lucked out and just need to replace fuse...unfortunately you have to do some disassembly to get to it ...good luck to you

Jan 09, 2011 | LG LMVM2055 Convection/Microwave Oven

1 Answer

On stove bulbs what is the wattage I need to replace the two bulb's. Everytime I purchase bulbs they don't last long. LG microwave, model # lmvm2055st Thanks, Dave

There should be a sticker in the back that quotes this. 40 Watt is the highest you may go the 130volt brands as this is a higher rating for 120volt and it will not burn out as quick. Make sure it is an appliance bulb. Most hardware stores like ACE have them. Big Walmarts do too but check the package.

Jan 03, 2011 | LG LMVM2055 Convection/Microwave Oven

1 Answer

We got LG combination microwave we cooked last night few potatoes next day when we start using it again it's microwave function stopped working yet rest all working it hasn't blown any fuse either. Plz...

It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Dec 22, 2010 | LG Microwave Ovens

1 Answer

The buttons on my microwave stopped working and it randomly beeps for no reason

You likely have a shorting membrane keypad.

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or leave the door open when it's not in use, and of course one should never leave a microwave unattended while cooking.

With the model number, we can offer more specific advice or an estimate.

But since FixYa does not notify us of follow-ups, you will need to post a new help request.

May 31, 2010 | LG LMVM2055 Convection/Microwave Oven

1 Answer

The microwave starts by itself and does all different things.

the power triac that is the main power controller for power to the microwave is starting to leak from the gate terminal and is firing the triac,just as if you pushed the start button

Sep 08, 2009 | Jenn-Air JMC8130DDS Microwave Oven

1 Answer

Starting by itself

Time for a service call. Should not turn on by itself at any cause. Circuit board is my guess. May be cheaper/easier to get new microwave. My first one lasted about 15 yrs--and the circuit board (touchpad) died. Bought new microwave oven.

Dec 12, 2005 | Emerson MW8775W Microwave Oven

Not finding what you are looking for?
LG LMV2055ST Microwave Oven Logo

554 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9098 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 2 Expert

228 Answers

Are you a LG Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides