LG LAS950M - Hdmi Output

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ELECTRICAL TROUBLESHOOTING GUIDE
No HDMI Audio / Video output
CN105, CN804
B to B connector OK?
Replace B to B (board to board) connector.
YES
YES
YES
YES
NO
CN803 pin18 &
HDMI_5.5VA OK?
X800
27 MHz OK?
CN803 pin19 HP_DET
about 2.0 ~ 5.3 V OK?
IC100
HDMI_SCL/SDA, PWR_CTRL, CEC
OK?
IC800
1.0 V, 3.3 V OK?
Is there signal on TMDS?
Check D812 & HDMI_5.5VA line.
Check X800 or replace.
Check hot plug detect signal from TV.
Check IC100.
Check IC801, IC802, IC803.
Check TMDS trace from IC800.
NO
NO
NO
NO
NO
NO
HDMI output OK.
YES
YES
YES
YES
5. NO HDMI OUTPUT