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(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run
(Display operates properly)
CONDITION
No microwave
oscillation.
CHECK
Disconnect the
wire leads from
relay 2 and
check continuity
of relay2.
(Operate the
unit)
Check H.V.
transformer.
Check H.V.
capacitor.
Check H.V.
diode.
Check
Magnetron.
RESULT
No continuity.
Continuity.
Abnormal
normal
Abnormal
normal
Abnormal
normal
Abnormal
5-17
CAUSE
Defective P.C.B
assembly
Defective high
voltage
transformer.
Defective high
voltage capacitor.
Defective high
voltage Diode.
Defective
magnetron.
REMEDY
Replace P.C.B
assembly
Replace high
voltage
transformer .
Replace high
voltage capacitor.
Replace high
voltage Diode.
Replace
magnetron .
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