The problem
Microwave runs timer and accepts commands, but fails to heat
The repair
Replaced the faulty magnetron
The result
Heating is restored and normal operation is verified
Customer Complaint and Possible Causes
The customer reported a failure of heating when using the microwave, while functional buttons and the countdown timer operated normally. Potential causes for this symptom typically include a faulty magnetron, a defective high-voltage diode, a failed transformer, or issues within the power supply circuit.
Diagnosis and Findings
We checked the electrical connections and the magnetron power supply circuit. We found that proper voltage was present at the magnetron terminals during the operating cycle, but the component still failed to produce any heat.
Repair Performed
We replaced the faulty magnetron with a new component to resolve the heating failure.
Verification and Outcome
We confirmed that heating was present and that the microwave operated normally after the magnetron replacement.
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