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42LH30FD (CHASSIS:LT91A) - LG TV Service Manual (repair manual). Page 48

Read LG 42LH30FD (CHASSIS:LT91A) Service Manual online

Check Signal format
Is it supported?
Check the SCART Cable
YES
Check MAIN B’D JK1100
Replace MAIN B’D JK1100
YES
NO
YES
Check MAIN B’D C200 (RED)
C201 (GREEN)
C202 (BLUE)
Video Signal ?
Replace
MAIN B’D C200, C201, C202
NO
Replace MAIN B’D IC 100
YES
Making 
Revision 
2009. 2 . 1
LCD TV
Symptom
AV1(Scart RGB) No Video 
Problem
26~42LH2000
32~47LH3000/LH4000
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