Read LG 47LW6500-UA (CHASSIS:LA12C) Service Manual online
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID & EEPROM
IC802 I2C Signal R848, R847(SDA,SCL)
Check JK804
H/V_Sync/R/G/B Signal Line
L806/7/8
ok
ok
ok
No
No
Re-download EDID data or Replace the defective IC
ok
Replace Jack
Check DSUB_DET
Replace R820
No
ok
No
Check BCM LVDS Output
Replace BCM( IC101) or Main Board.
6. Trouble shooting - No video (RGB-PC)
ok
No
Check FRC IC LVDS Output
Replace FRC IC (IC5201) or Main Board.
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