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42LH250C (CHASSIS:LD91Z) - LG TV Service Manual (repair manual). Page 50

Read LG 42LH250C (CHASSIS:LD91Z) Service Manual online

Check Signal format
Is it supported?
Check the SCART Cable
YES
MAIN B’D JK1100 Check
Replace MAIN B’D JK1100
YES
NO
Check MAIN B’D R1117
Video Signal ?
NO
YES
Check MAIN B’D C210
Video Signal ?
Replace
MAIN B’D C210
NO
Replace MAIN B’D IC 100
YES
Making 
Revision 
2009. 2 . 1
LCD TV
Symptom
AV1(Scart CVBS) No Video
Problem
19~42LH250C
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