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[LG microwave oven] It operates too loudly. A loud humming noise is heard

Troubleshooting

A noise occurs due to vibrations generated by internal parts and foreign objects during operation.
A noise may occur if the product is installed on top of a sink or on a rice dispenser made of metal.

Try this

Lightwave ovens or microwave ovens generate a vibration noise of 45 to 50 decibels (dB) in the process of creating high frequencies.
This is a normal noise, and rest assured as it is not a product defect.
If you feel that the noise is loud, check the following.

1. If the rotation plate and the rotation tray inside the oven are not properly placed, they may get caught during rotation or the rotation plate may not be level, generating a noise.

Rotating dish and rotating tray inside the cooking chamber

2. If there is a foreign object on the rotation shaft or rotation wheel, a noise may be caused by the foreign object, so remove it.

Rotating wheel and shaft inside the cooking chamber

3. If the installation space is not level, vibration may cause a noise during operation.
Press on one side of the product to see if it moves, and if it moves move the product to a flat surface and ensure that it is level.

This guide was created for all models, so the images or content may be different from your product.

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