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LCD TV
Symptom
Check Signal format
Is it supported?
YES
Check the RGB Cable
YES
MAIN B'D JK405 Pin #2
Video signal ?
R446 has Vsync ?
R447 has Hsync ?
YES
Check MAIN B'D C207 (Video)
R2030 (HSYNC)
R2031 (VSYNC)
YES
Replace MAIN B'D IC 100
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
RGB No Video Problem
MAIN B'D JK405 Check
NO
Replace
MAIN B'D C207 or R2030 or R2031
NO
Making
Revision
Replace MAIN B'D JK405
NO
2009. 2 . 1
9/25
LGE Internal Use Only
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