Oven Lamp Does Not Operate - LG LRE30451 Service

FAILURE MODE FLOW CHART

Oven lamp does not operate

Oven lamp does not operate
Disconnect power
Check for loose connection of oven lamp terminal and harness
No
Normal?
Yes
Reconnect
Check for loose connector (main PCB CN1)
If defective harness, replace or fix
END
No
Normal?
Reconnect
Yes
END
Check the oven lamp (measure the resistance)
No
Replace the
Normal: Below 5 Ω , Abnormal: infinite
Normal?
oven lamp
Yes
Replace
END
Abnormal
the main PCB(009A)
END
Infinite
6-10