LG 29FS2RMB-TP Service Manual page 19

Check the waveform
at pin 12 of IC001.
NO
Check /Replace
IC201, Q206.
Check /Replace
IC101, IC003.
Check the voltage
at pin 2, 7 of IC301.
Check / Replace
R850, R851, D850, D851.
Check / Replace
NO DVD/COMPONENT PICTURE
Check Y,Cb,Cr signal
input from JA202.
Check the waveform at pin78, 80, 82 of IC101.
(From comp1, 480i input)
Check the waveform at pin1, 2, 3 of IC401.
(From comp1, 480p/1080i input)
Check the waveform at pin7, 8, 9 of IC401.
(From comp2, 480p/1080i input)
NO
Check/Replace
Q301, 302, 303, 304, 305, 306.
NO
Check / Replace
IC401.
YES
Check the waveform at
pin4, 5, 6, 2 of IC501.
NO
Check /Replace
IC501.
Check the waveform
at pin 52, 53 of IC501(D).
Check / Replace
IC501(D). IC301, D301.
YES
YES
Check the waveform at
pin20, 21,22 of IC501.
Check the waveform at
pin 62, 63, 64 of IC501.
NO
Check / Replace
IC501.
YES
YES
YES
Check / Replace
Q503, 504, 505,CPT Board.