LG 37LF2500 Service Manual page 55

LCD TV
Symptom
Check Signal format
Is it supported?
YES
Check the RGB Cable
YES
MAIN B'D P400
Pin #3 (BLUE)
Pin #2 (GREEN)
NO
Pin #1 (RED)
Video signal ?
YES
Check MAIN B'D C212 (RED)
C207 (GREEN)
C213 (BLUE)
Video Signal ?
YES
Replace MAIN B'D IC 100
RGB No Color Problem
MAIN B'D P400 Check
NO
Replace
MAIN B'D C212 or C207 or C213
NO
Making
Revision
Replace MAIN B'D P400
2009. 2 . 1
15/34
26~42LH2000
32~47LH3000/LH4000