S-Video Video Output Troubleshooting - LG LRM-519 Service Manual

5. S-VIDEO VIDEO OUTPUT TROUBLESHOOTING

No display
YES
NO
Video Cable
connection OK
YES
NO
S800 status OK
YES
NO
IC508(3,5-pin) Video
signal input OK
YES
NO
IC508 (8-pin) +5V
OK
YES
NO
IC508 (4-pin) -5V
OK
YES
NO
IC508(1,7-pin) Video
signal output OK
YES
NO
R774, R775, FL510,
FL512 Soldering OK
YES
S-Video Video
Output OK
Cable connect
S800 setting CVBS
Video Part-1 check
NO
IC803 (4-pin)
Under +2.5V OK
YES
IC803 Check
J900 (3-pin) check
NO
R731, R732, R733,
R734 soldering OK
YES
IC508 Check
NO
R735, R736, R737, R739
C652, soldering OK
YES
IC508 Check
Re-soldering
Q815, R881~883,
R839 Check
Re-soldering
Re-soldering
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