Video Troubleshooting - LG HCS6000A Service Manual

4. VIDEO TROUBLESHOOTING

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