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42LH250C (CHASSIS:LD91Z) - LG TV Service Manual (repair manual). Page 52

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Check Spec (Refer to User Manual)
Is it supported?
Check the SCART Cable
YES
MAIN B’D IC100 Check
YES
Check MAIN B’D C1142
Video Signal ?
NO
Replace MAIN B’D Q1205
YES
Check MAIN B’D C1107
Video Signal ?
NO
MAIN B’D JK1100 Check
YES
Making 
Revision 
2009. 2 . 1
LCD TV
Symptom
AV1 No Video Out Problem
19~42LH250C
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