(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run. (Display operates properly)
CONDITION
No microwave oscillation.
CHECK | RESULT | |
Disconnect the | No continuity. | |
wire leads from | ||
| ||
relay 2 and |
| |
check continuity | Continuity. | |
of relay 2. | ||
| ||
(Operate the unit) |
| |
Check high vol- | Abnormal | |
tage transformer | ||
|
Normal
CAUSE
Defective PCB assembly.
Defective high voltage transformer.
REMEDY
Replace PCB assembly.
Replace high voltage transformer.
Check high vol- | Abnormal | |
tage capacitor. | ||
|
Normal
Check high vol- | Abnormal | |
tage diode. | ||
|
Defective high voltage capacitor.
Defective high voltage diode.
Replace high voltage capacitor.
Replace high voltage diode.
Normal
Check magnetron.
Abnormal
Defective magnetron.
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.
