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(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run
CONDITION
No microwave
oscillation.
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(Display operates properly)
CHECK
Disconnect the
wire leads from
relay 4 and
check continuity
of relay 4.
(Operate the
unit)
Check H.V.
transformer.and
H.V. Fuse.
Check H.V.
capacitor.
Check H.V.
diode.
Check
Magnetron.
manuals search engine
RESULT
Defective P.C.B
No continuity.
assembly
Continuity.
Defective high
Abnormal
voltage
transformer and
H.V. Fuse.
normal
Defective high
Abnormal
voltage capacitor.
normal
Defective high
Abnormal
voltage Diode.
normal
Defective
Abnormal
magnetron.
5-18
CAUSE
REMEDY
Replace P.C.B
assembly
Replace high
voltage
transformer and
H.V. Fuse.
Replace high
voltage capacitor.
Replace high
voltage Diode.
Replace
magnetron.
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