Read LG 42LH301C (CHASSIS:LD91A) Service Manual online
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace MAIN B’D IC 100
MAIN B’D JACK Check
JK600 -> HDMI1
JK601 -> HDMI2
JK602 -> HDMI3
JK601 -> HDMI2
JK602 -> HDMI3
YES
_ This case is that HDMI Video doesn’t display at the some HDMI input, not all.
Making
Revision
2009. 2 . 1
17/34
LCD TV
Symptom
HDMI1 or 2 or 3 No Video
Problem
Problem
HDMI1 – ALL MODELS
HDMI2 – Except for 19/22LH20**
HDMI3 – Except for 19/22LU40**, 19/22LU50**, 19/22LH20**
HDMI2 – Except for 19/22LH20**
HDMI3 – Except for 19/22LU40**, 19/22LU50**, 19/22LH20**
26~42LH2000
32~47LH3000/LH4000
32~47LH3000/LH4000
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