WM2701HV - LG Washing Machine Service Manual (repair manual). Page 32

8-5. TROUBLE SHOOTING ELSE

1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First of all, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.

Check the
fuse or reset
the circuit
breaker

Is the current rating of
multi-outlet power strip
enough?
(Avoid connecting several
electric devices.)

Is the supplied voltage
120V AC?(+10%, -15%)

Alternate with
explanation

Is the connector connected
to PCB/Noise filter
disconnected or
disassembled?

Reconnect
or repair
the connector

Replace the
MAIN PWB
ASSEMBLY

Main LED

Is LED on while the power
is on?

Replace the
DISPLAY
PWB
ASSEMBLY

Is three pin wire of
display PWB broken?