Hdmi No Audio/Video Check (With Hdmi In) - LG HB954TB Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

8. HDMI NO AUDIO/VIDEO CHECK (with HDMI IN)

HDMI IN 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'L13'~)
OK?
YES
JK801 or JK802's
pin1,3,4,6,7,9,10,12 TMDS
signal input OK?
YES
JK801 or JK802
soldering OK?
YES
JK801 or JK802 &
HDMI cable connection check
NO
JK803 & HDMI cable
connection check
NO
JK803 Re-soldering
NO
IC807 check
NO
IC806 check
NO
IC815's
pin'A2' HIGH?
IC815 check
NO
IC808 ,X802,IC803,
IC804 check
NO
JK801 or JK802 Re-soldering
2-39
NO
YES
MICOM(IC101) check