Cvbs Video Output - LG BD630N Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE
4. NO CVBS VIDEO OUTPUT
No CVBS video on display
YES
Is there
CVBS signal
on L801?
YES
Is there
CVBS Signal out of
L801?
YES
Is there
signal on D804?
YES
Check JK802
and RCA cable connection.
Check
NO
IC501 MT8550L BAG Vcc or
replace IC501 MT8550L BAG.
NO
Replace L801.
NO
D804, 3.3V OK?
Replace D804.
3-49
NO
YES
Check IC207.