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47LW6500-UA (CHASSIS:LA12C) - LG TV Service Manual (repair manual). Page 64

Read LG 47LW6500-UA (CHASSIS:LA12C) Service Manual online

4. Trouble shooting - No video (AV)
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
Check JK11055 , JK1102 CVBS Signal Line
ƒ Rear AV : R1140 
ƒ Side AV : R1136
ok
ok
ok
No
Replace Jack
ok
Check CVBS_DET Signal
• Rear AV Detect : R1129
• Side AV Detect : R1113
Replace R1129 or R1113
No
No
Check  BCM LVDS Output
Replace  LGE35230( IC101)
or Main Board.
ok
No
Check FRC IC LVDS Output
Replace  or FRC IC ( IC5201) or Main Board.
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