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Do you have a question about the LMS-1720TW and is the answer not in the manual?

Questions and answers

Henry Novak
May 20, 2025

LMS 1520 TW Plate turning, no heat

1 comments:
Mr. Anderson
May 24, 2025

If the LG LMS-1720TW microwave plate turns but does not heat, possible causes include:

1. Magnetron failure: The magnetron produces microwave energy. If it fails, the microwave cannot heat food, even if the plate turns.

2. High-voltage components failure: Components like the high-voltage capacitor, diode, or transformer may be defective, preventing power from reaching the magnetron.

3. Door switch malfunction: If one of the door switches is faulty, the microwave may run the turntable motor but block power to the magnetron for safety.

4. Control board issue: A faulty control board may not send power to the magnetron even though other functions work.

5. Thermal fuse or thermostat: If the thermal fuse or temperature sensor trips, it may stop the microwave from heating while allowing other functions.

6. Incorrect power supply: Insufficient or unstable power supply may cause the microwave to operate partially.

Diagnosis should be done by a qualified technician due to high-voltage components.

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