Video Troubleshooting - LG LST-5600A Service Manual

6. VIDEO TROUBLESHOOTING

Start
NO
No HV sync OUT?
NO
Any problem in main picture?
NO
Any problem in AV out?
NO
END
YES
YES
YES
(C1)
3-16
(A)
What is the main picture source?
DTV or NTSC or RGB
DTV NTSC
(C2)
(D)
RGB
(C2)