Read LG 47SL90QD-AA (CHASSIS:LB91L) Service Manual online
Making
Revision
2009. 2 . 1
10/25
LCD TV
Symptom
RGB No Color Problem
Check Signal format
Is it supported?
Revision
Is it supported?
Check the RGB Cable
YES
MAIN B’D JK405 Check
Replace MAIN B’D JK405
YES
NO
NO
MAIN B’D JK405
Pin #3 (BLUE)
Pin #2 (GREEN)
Pin #1 (RED)
YES
Check MAIN B’D C2016 (RED)
C2017 (GREEN)
(
)
Video signal ?
C2017 (GREEN)
C2018 (BLUE)
Video Signal ?
Video Signal ?
Replace
MAIN B’D C2016 or C2017 or C2018
NO
YES
Replace MAIN B’D IC 100
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