Read LG 42SL90QR-MA (CHASSIS:LP91L) Service Manual online
No power
(LED indicator off)
Check 24V, 12V, 5,2V
of Power B/D
Check short of Main B/D
or Change Power B/D
Pass
Check Output of
IC1001, IC1003, IC1007
Check P307 Connector
Change LED Assy
:
[A] PROCESS
Fail
Fail
Pass
Pass
Check LED Assy
Change IC1002,, Q1003
Pass
Check short of IC1001, IC1003, IC1007
Fail
Re-soldering or Change defect
part of IC1001, IC1003, IC1007
Fail
SL90 Series
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