F1391QDP - LG Washing Machine Service Manual (repair manual). Page 30

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30
No Power
Is the Power Plug connected
firmly to the power outlet? 
And is the supply voltage
220~240V AC?
Is 
Red LED ON 
while power supplied ?
Is Multi-plug socket used ?
NO
NO
NO
YES
YES
YES
NO
Is the connectors connected
Correctly to the Display 
PCB?
Is the 
Connector
connected correctly to 
the 
Main PCB
and the 
Noise Filter
?
Or is the 
Harness
alright ?
Reconnect 
Power Plug
firmly. 
Check the fuse or 
reset the circuit breaker.
Don’t use 
Multi-plug
socket.
Use 
Single Plug
socket for 
washing machine.
YES
YES
Reconnect or repair the 
Connector
.
Or replace the 
Harness
.
Check connectors otherwise.
Replace 
Display PCB
.
Check and replace 
Main PCB
.
8. TROUBLESHOOTING WITHOUT ERROR CODES
noise filter
PCB
Page of 44
Display

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