Read LG 32LH30FD (CHASSIS:LT91A) Service Manual online
Check Signal format
Is it supported?
Check the CVBS Cable
YES
MAIN B’D JK402 Check
Replace MAIN B’D JK402
YES
NO
Check MAIN B’D R400
Video Signal ?
NO
YES
Check MAIN B’D C217
Video Signal ?
Replace MAIN B’D C217
NO
Replace MAIN B’D IC 100
YES
Making
Revision
2009. 2 . 1
LCD TV
Symptom
AV3(CVBS) No Video Problem
26~42LH2000
32~47LH3000/LH4000
32~47LH3000/LH4000
10/34
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