Question about LG LTM9000 Microwave Oven

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My LG microwave does not heat food ,spins but makes noise

LG Interllowave 900w

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  • vishnukn Dec 02, 2008

    My lg microwave gives me a warning signal on the display , like the rombus and a exclamation mark inside !) and none of the keypades work

  • rachelleb Jan 14, 2009

    LG mocrowave does not heat food, spins slight noise, the grill works but it just wont heat food

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1 Answer

High voltage fuse blowed

Posted on Oct 27, 2008

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6ya6ya
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Posted on Jan 02, 2017

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Hi, the rollers on the support mechanism has residue, try cleaning the rollers and the track it follows, should resolve the sound problem

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We were using the microwave the other night and it started making a loud noise like the fan was running (although the fan was not). We let it sit for awhile and try to use it again but the noise came...


The loud noise and no heat means that the magnetron has failed. It the part that generates the microwaves that heat the food. When it fails it shorts out, causing the transformer to heat up. That is what was causing the burning smell. The cost of a replacement magnetron is around $130-150 range so it may not make sense to have it fixed.

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IF the noise is a sound coming from the oven area, its the megatron tube. Typically, replacing the megatron tube is more expensive than replacing wiht a new unit and a new warranty.

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Microwave is not heating at all


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LG Microwave does not heat food


est the high voltage capacitor,the rectifier diode.or the magnetron. If all this are fine, test the control board.

Thediode and capacitors can br tested. The capacitor must bealloweddischarge before testing, or you risk to get electrocuted, evenifpower is off. Capacitors can get discharged by shorting theirtwocontacts.
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.

Feb 27, 2009 | LG LTM9000 Microwave Oven

1 Answer

Microwave not heating food and is making loud noise.


You have burned out the magnatron (heating element) which is common on GE microwaves. most service companies will charge about 200-250 to replace it

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Lg wavedom microwave food not heating


I have a problem with my LG microwave wavedom .it makes a loud noize and i does light up and turns around but its not heating any of the food which i put in to warm. Can anyone can help please? What can i do?

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