Read LG 60LS5700 / 60LS5750 / 60LS579C (CHASSIS:LA22E) Service Manual online
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7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID I2C Signal
R3308,R3309,R3314,R3315,
R3328,R3329,R3302,R3303
Check JK3300, JK3301, JK3302
JK3303
ok
ok
ok
No
No
Replace LGE2112(IC105) or Main Board
ok
Replace Jack
Check HDMI Signal
Check other set
If no problem, check signal line
No
Check Mstar LVDS Output
Replace LGE2112(IC105) or Main Board
ok
No
Replace Main Board
No
Check HDMI_DET(HPD)
No
ok
Check Several component
Q3300,Q3301,Q3302,Q3303
No
Replace LGE2112(IC105) or Main Board
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