LG LHB976 Service Manual page 107

MAIN SET ONE POINT REPAIR GUIDE
1-6. BAD HDMI VIDEO / AUDIO INPUT
When unit is connected to HDMI in(1 or 2) using HDMI cable, picture shows bad color, no output or
mixed color on the screen.
1-6-1. JK801 & JK802
1-6-1-1. Solution
Replace JK801 or JK802 (HDMI Jack).
1-6-1-2. How to troubleshoot (Countermeasure)
1) Check JK801 or JK802 pin soldering.
2) If there is short soldering on pin JK801 or JK802, re-soldering pin JK801 or JK802.
3) If problem still occurs, check R814 ~ R829:
If issue still NG, replace IC801.
1-6-1-3. Service hint (Any picture / Remark)
JK802
R822 ~ R829
IC801
< MAIN board top view >
2-92
JK801
R814 ~ R821