Video Check - LG HB954WA Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE
7. NO VIDEO CHECK
Component video out
IC251's pin1,2,3
video signal OK?
YES
IC251's pin6,7,8
video signal OK?
YES
JK251 check
CVBS video out
IC250's pin6
video signal OK?
YES
IC250's pin2
video signal OK?
YES
IC253's pin8
video signal OK?
YES
JK251 check
NO
NO
NO
IC500 check
NO
IC250's
pin1 LOW?
IC250 check
NO
IC253 check
2-37
IC500 check
IC251 check
NO
YES
IC101 check