(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run. (Display operates properly)
CONDITION
No microwave oscillation.
CHECK |
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Disconnect the |
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| No continuity. |
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wire leads from |
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relay 2 and |
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check continuity |
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| Continuity. |
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of relay2. |
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(Operate the unit) |
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CAUSE
Defective PCB assembly
REMEDY
Replace PCB assembly
Check high vol- | Abnormal | |
tage transformer | ||
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normal
Check high vol- | Abnormal | |
tage capacitor. | ||
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normal
Check high vol- | Abnormal | |
tage diode. | ||
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normal
Defective high voltage transformer.
Defective high voltage capacitor.
Defective high voltage diode.
Replace high voltage transformer.
Replace high voltage capacitor.
Replace high voltage diode.
Check | Abnormal | Defective | |
Magnetron. | magnetron. | ||
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Replace magnetron.
NOTE: • Make sure the wire leads correct position.
•When Removing the wire leads from the parts, be sure to grasp the connector, not the wires.
•When removing the magnetron, be sure to install the magnetron gasket in the correct position and in good condition.
Output is full power when you set lower power level.
Disconnect the wire leads from relay 2 and check continuity relay 2. (Operate the unit)
Abnormal.
Defective PCB assembly
Replace PCB assembly