LG T8526AFPT Service Manual page 49

4-8-1 TROUBLESHOOTING ELSE
CAUTION
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.
Is the supplied voltage
120V AC?(+10%, -15%)
Yes
Is the current rating of
multi-outlet
power strip enough?
(Avoid connecting several
electric devices )
Yes
Is the connector connected
to PCB/Noise filter
disconnected or
disassembled?
Yes
NO POWER
Check the
No
fuse or reset
the circuit
breaker
Alternate with
No
explanation
Reconnect
No
or repair
the
connector
Is LED on while the power
is on?
Yes
Is three pin wire of
display PWB broken?
Display PWB
Connecting connector
MAIN PWB~ Display PWB
48
Replace the
No
MAIN PWB
ASSEMBLY
Replace the
No
DISPLAY
PWB
ASSEMBLY