LG LAS950M - Page 29

2-10
ONE POINT REPAIR GUIDE
NO SOUND
When unit is connected to HDMI TV using HDMI cable, picture shows bad color, no output or mixed
color on the screen. But component output is OK.
3-4. HDMI
3-4-1. Solution
Replace IC800, CN800, CN801, CN802, CN803 (HDMI jack).
3-4-2. How to troubleshoot (Countermeasure)
1) Check HDMI_5VA at pin3 of IC803.
2) Check HDMI_3.3V at pin3 of IC801.
3) Check HDMI_1V at pin8 of IC802.
4) 1), 2), 3) is OK
 Replace IC800.
5) Check CN105, CN804 (MAIN  HDMI B to B (board to board) connector).
6) B to B (board to board) connector is not good
 Replace B to B (board to board) connector (CN105, CN804).
3-4-3. Service hint (Any picture / Remark)
< HDMI board top view >
CN803
CN803
CN802
CN802
CN800
CN800
CN801
CN801
IC803
IC803
IC801
IC801
IC800
IC800
IC802
IC802