LG 22LD310 Service Manual page 29

TROUBLE SHOOTING GUIDE
No power
(LED indicator off)
Check 24V, 12V, 5,2V
of Power B/D
Pass
Check Output of
IC701, IC702, IC704,Q705 IC701, IC702, IC704,Q705
Pass
Check LED Assy
Pass
Check P201 Connector
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Only for training and service purposes
[A] PROCESS
:
Fail
Fail
Check short of IC701, IC702, IC704
Change IC701, IC702, IC704
Fail
Check short of Main B/D
or Change Power B/D
Pass
Change LED Assy
Fail
Re-soldering or Change defect
Part. Part
LGE Internal Use Only