LG HB954WA Service Manual page 51

ELECTRICAL TROUBLESHOOTING GUIDE
Other function
JK803's pin1,3,
4,6,7,9,10,12 TMDS Data
signal OK?
YES
JK803
soldering OK?
YES
IC807's pin5,7,
8,10,11,13,14,16 TMDS
signal OK?
YES
IC806's video
input signal(pin35~98)
OK?
YES
IC815's video
input signal(pin'C5'~)
OK?
YES
IC500 check
NO
JK803 & HDMI cable
connection check
NO
JK803 Re-soldering
NO
IC807 check
NO
IC806 check
NO
IC815's
pin'A2' LOW?
IC815 check
2-40
NO
YES
MICOM(IC101) check