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Panasonic Microwave is Loud or Noisy

NN6371WM

The 1 most common part(s) or condition(s) which cause the symptom Microwave is loud or noisy are listed below starting with the most likely. Check or test each item and watch any available videos.

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Magnetron - Part # 373304 Mfg Part # 10QBP0232

Magnetron

RepairClinic Item # 373304 Aftermarket (Non-OEM) part

If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.

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