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42LV3500-DG (CHASSIS:LT01M) - LG TV Service Manual (repair manual). Page 61

Read LG 42LV3500-DG (CHASSIS:LT01M) Service Manual online

6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open connector
Check EDID & EEPROM
IC1105 I2C Signal
R1411, R1413(SDA,SCL)
Check JK1104
H/V_Sync/R/G/B Signal Line
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
ok
Replace Jack
Check DSUB_DET
Replace R1146 or R1147
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
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