LG LSS-3200A Service Manual page 41

(B)
Check analog component mute ON?
YES
Check analog buffers. IC604, IC612 for
composite & S- video out.
IC609 for component YPbPr, IC610 for
RGB analog
YES
Jump to (A) flow
NO
No OSD is not a problem.
Check DVI output.
NO
Check A5V(L603) & A- 5V(L604) are
supplied.
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