Question about LG Microwave Ovens

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My LG Microwave Model# LMV1640DW1 will not heat up. Everything else works fine on the keypad. When the microwave is working, the cook sign is on.

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Get replaced the magnatron,this problem is due to faulty magnatron .

Posted on Mar 04, 2019

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9156 Answers

SOURCE: I've replaced the computer on

If you don't have the owner's manual you can download it here:

http://shared.whirlpoolcorp.com/assets/pdfs/literature/Use%20and%20Care%20Guide%20-%204452300.pdf
http://shared.whirlpoolcorp.com/assets/pdfs/literature/Use%20and%20Care%20Guide%20(Micro)%20-%204452614.pdf

Some units will not allow time programming if the door is open - or if the microwave thinks it is due to a bad door switch or door switch mount, etc.

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

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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

Posted on Mar 07, 2008

biigg53566
  • 99 Answers

SOURCE: everything works except the cooking part/no heating/turntable not turning, help!

you may have gotten a power surge and that can cause some funny things to happen, 1st is there power to the oven, 2nd if so there may be an internal fuse protector built in to the oven, check with the manual for anything of that sort listed. if not you may have to take it in and have it repaired by a pro. there is a lot of voltage in these ovens and unless you know what you are doing a person could get hurt

Posted on Jan 03, 2009

  • 1 Answer

SOURCE: Microwave won't heat food.

built in 3/94 is it worth fixing how much for magetron

Posted on Feb 12, 2009

EwingElect
  • 276 Answers

SOURCE: GE Microwave won't heat or cook - one year old

More than likely the magnetron has failed. This could be for a number of reason. Do you use your microwave to heat wheat packs or warm plates? If so, you may have dried the magnetron out (they use the moisture in whatever you're cooking to heat it, and plates/wheat bags have no moisture).

I'd say a trip to your local Microwave repairer could be in order. It could also be the High Voltage Fuse which has failed. Either way a repairer will be able to tell you!

Posted on Mar 25, 2009

  • 186 Answers

SOURCE: Problem with the GE Advantium

sounds like the magnetron. Youll have to have a technician replace it. if you have a warranty just call the company and they should take care of you.

Posted on Jan 29, 2011

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1 Answer

My microwave GE model # JVM1440WH04 spacemaker has no heat coming out of it. My husband heated microwave lasagna in it last, everything works except for the heat, any solutions?


Push the microwave door tightly closed. The computer will not start cooking until the door is closed for safety reasons. Some models of microwave will give a warning on the screen if the door is open.
2

Ensure you have programmed a heat setting, entered a cooking time and pressed the "Start" button on the microwave's keypad. Check that the microwave is not set to "Defrost" mode.
3

Unplug the microwave and wait for one minute. This measure will reset the microwave's internal computer if it has frozen or scrambled. Plug the microwave back in and try again.
4

Ensure the keypad lock mode is inactive. Most microwave ovens have a lockout feature that prevents children from starting the microwave while unsupervised. Lockout mode is usually deactivated by holding down the button that bears a padlock symbol

Oct 05, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

My oven is not heating anything although everything else seems to be working fine. Your site said i may need a multi tester, what is this and where might i find one cheap.


Push the microwave door tightly closed. The computer will not start cooking until the door is closed for safety reasons. Some models of microwave will give a warning on the screen if the door is open.


Ensure you have programmed a heat setting, entered a cooking time and pressed the "Start" button on the microwave's keypad. Check that the microwave is not set to "Defrost" mode.


Unplug the microwave and wait for one minute. This measure will reset the microwave's internal computer if it has frozen or scrambled. Plug the microwave back in and try again.


Ensure the keypad lock mode is inactive. Most microwave ovens have a lockout feature that prevents children from starting the microwave while unsupervised. Lockout mode is usually deactivated by holding down the button that bears a padlock symbol

Oct 04, 2011 | Microwave Ovens

1 Answer

Hi there, I have a LG model: LMV1640DW1 microwave oven. Everything seems to be ok, but does not heat my food. The microwave is fairly new (feb 2008)


Possibly high voltage fuse or diode.If it is an inverter model may be circuit board problem.Not advisable to try and fix yourself very high voltage build up could still be present, contact your local repairer.

Apr 19, 2011 | LG Microwave Ovens

1 Answer

My LG (model ms3446vrl) wont heat anything. Everything else works fine. It is only 2 weeks out of warranty too, not happy. Lynda


Hi,


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

Microwave Oven Basic Troubleshooting Tips

heatman101

Jan 04, 2011 | LG LMV1680ST Microwave Oven

1 Answer

Microwave is not cooking/heating.


sounds like the magnatron they can just go out like a light bulb easier to buy a new microwave hope this helps regards Jim

Apr 13, 2009 | Microwave Ovens

2 Answers

I have a ge built in microwave model # JK90BM2BB but won't heat


This is a sure sign that the MAGNATRON has burnt out and needs replaced! (If the turntable works and the control panal is still working)! The MAGNATRON is what cooks the food)
Please rate my quick response!
THANK You!

Jan 16, 2009 | Kenmore 62622 Microwave Oven

2 Answers

Over the range Frigidaire Microwave not heating. Model FMT148


This is a sure sign that the MAGNATRON needs replaced (this is what heats up the food) if every thing else works but food not cooking! 99% of time it is the magnatron!
Please rate answer!
THANK YOU!

Jan 12, 2009 | Microwave Ovens

1 Answer

Everything works except the cooking part/no heating/turntable not turning, help!


you may have gotten a power surge and that can cause some funny things to happen, 1st is there power to the oven, 2nd if so there may be an internal fuse protector built in to the oven, check with the manual for anything of that sort listed. if not you may have to take it in and have it repaired by a pro. there is a lot of voltage in these ovens and unless you know what you are doing a person could get hurt

Jan 03, 2009 | Whirlpool GH4155XP Microwave Oven

1 Answer

Everything works...Except for actually heating the food


It has a bad magnetron. This is the tube that provides the microwaves to heat the food. Not too easy to replace yourself but it can be done. Cost of magnetron is probably less than $50 or $60.

Dec 14, 2007 | Frigidaire PLMV168 Microwave Oven

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