Question about LG LRM1250 Microwave Oven

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Unit turns on, turntable turns, but nothing heats

LG LRM1250w - Unit turns on, turntable turns, but nothing heats up.

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Classic symptoms for failed door interlock safety switches, though it could be other trouble.

Remove the cover and check the operation of the little micro switches that operate when you close the door.

DONT TOUCH THE SILVER CAN - LETHAL.

If you regularly open the door while cooking, the contacts in these little switches become burned. When burned badly enough, they cannot make contact. When they cannot make contact, the mocrowave doesnt know the door is closed and will not turn on the magnatron resulting in no heat.

If you need more help, let me know.

a

Posted on Sep 27, 2009

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Posted on Jan 02, 2017

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Manual for a whirlpool microwave oven model wmh31017aw-1


There is no turntable control. It is always on. The turntable should change direction each time the unit is used. If the turntable is not operating, it has malfunctioned. Newer microwaves for the most part all have full-time turntables to promote even heating, thus reducing customer complaints about ovens that don't heat right.

Dec 30, 2015 | Whirlpool Microwave Ovens

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The inside light turns on the turntable do not comes on appears to work but it wont heat


If the table does not turn it may not heat--A lot of these have a lever switch that is engaged when door closes--if it is not engaged no heat and no table movement---some actually break loose where they are mounted just inside the door frame (have to take apart unit to see them).

This happens as with door being closed often and or hard they can come loose. Its a safety switch to prevent use of the oven with the door open.

Jun 15, 2012 | LG Microwave Ovens

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How to change fuse for lg lrm1250W


Hello

Get beneath the LG microwave, and grasp it on the bottom at either end. Lift the microwave up slightly, and pull it out from the wall to remove it from the mounting plate.


Turn the microwave onto its face on a soft rug or blanket. Remove the screws from the back panel of the microwave, and slide the panel upward to take it off the unit.


Look for the three fuses in the LG microwave -- one at the lower-right corner, one in the upper-right corner and one in the top center. Check each of the fuses to see if any of them look dark in color; this indicates a burned-out fuse.


Remove the burned-out fuse by gripping it firmly and pulling it away from the wall of the microwave. Once the fuse is removed, press the new fuse into the same position in the microwave until it clicks into place.


Slide the back panel onto the microwave, and replace the screws. Lift the microwave into the space beneath the cabinet from which it was removed, holding it slightly higher than the mounting plate, and lower the microwave until it catches on the mounting plate.

Oct 05, 2011 | LG LRM1250 Microwave Oven

2 Answers

My LG Microwave (LRM1250W) does not heat all of a sudden


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

Basic Microwave Oven TroubleshootingTips

heatman101[p]][p

Feb 17, 2010 | LG LRM1230W Microwave Oven

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NO HEAT


Circuit board is bad. Cheaper to buy new microwave.

Sep 19, 2009 | Amana AMV1162 Microwave Oven

1 Answer

Does not heat up


HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.

(((The fuse is located inside the unit along side the magnetron)))

Aug 01, 2009 | LG Microwave Ovens

1 Answer

Lrm1250w/01 lg microwave turns on and runs but will not get hot any ideas I have the very same problem. The microwave shot craps. I too searched the internet for a fix. I suggested the purchase of a new...


If it is working but not heating, then test the high voltage capacitor,the rectifier diode.or the magnetron. If all this are fine, test the control board.If turntable is not running check also the door switch.

The diodeand capacitors can be tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, evenif power is off.Capacitors can get discharged by shorting their two contacts.
Before replacing the magnetron test also the control board.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.



All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

You can also order from MicrowaveSvc , they also provide parts.

Jun 02, 2009 | LG LRM1250 Microwave Oven

1 Answer

Lrm1250w/01 lg microwave turns on and runs but will not get hot any ideas


Solution .....purchase a new micriwave other than LG.
Im not impressed with our either!

Feb 18, 2009 | Microwave Ovens

1 Answer

Non rotating lg turntable fixit try failure


Looks this model's turntable support has a coupler shaft built-in which is supposed to go down into the turntable motor hole and make contact with the turntable shaft. Is that right in your case?

So I would wonder if the turntable support has gotten bent due to heat. That's common on some models.

When you take it out and look at it from the side, are the legs straight and perpendicular to the shaft or are they bent down?

On some models, you can heat them over a stove flame, then put them on a flat surface with a weight to old them in position while they cool.

Otherwise, you'll need a new turntable support. LG / Goldstar calls this a "rotating ring".

For Goldstar / LG / L.G. help, call 1-800-243-0000 (M-F, 7am-8pm CT, Sat 8-5 CT) and choose the appropriate prompt from the menu or visit http://www.lgservice.com.

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

May 12, 2008 | LG LRM1250 Microwave Oven

1 Answer

Lg lrm 1250


Looks this model's turntable support has a coupler shaft built-in which is supposed to go down into the turntable motor hole and make contact with the turntable shaft. Is that right in your case?

So I would wonder if the turntable support has gotten bent due to heat. That's common on some models.

When you take it out and look at it from the side, are the legs straight and perpendicular to the shaft or are they bent down?

On some models, you can heat them over a stove flame, then put them on a flat surface with a weight to old them in position while they cool.

Otherwise, you'll need a new turntable support. LG / Goldstar calls this a "rotating ring".

For Goldstar / LG / L.G. help, call 1-800-243-0000 (M-F, 7am-8pm CT, Sat 8-5 CT) and choose the appropriate prompt from the menu or visit http://www.lgservice.com.

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

May 12, 2008 | LG LRM1250 Microwave Oven

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