LG 55G2 - 3. Trouble shooting - No video (Analog TV video)

3. Trouble shooting - No video (Analog TV video)
Check RF Cable & Signal
Check CVBS Signal
TU6500 8 Pin
ok
ok
ok
No
Bad Tuner. Replace Tuner.
Check Tuner 3.3V Power
L6503
Replace L6503
Check Tuner 1.8V Power
IC6503 2pin : 1.8V
Replace IC6503
ok
No
No
Check CVBS buffer
Q6501(Emitter)
No
Bad TR. Replace TR.
ok
Check CVBS signal at destination
R571, C549
No
Bad Resistor or Capacitor.
Replace Resistor or Capacitor.
Check L9 Ace (IC101) Chip
Replace IC101
No
Check L9 D-chip (IC100) Chip
Replace IC100 or Main Board.
No
ok
ok
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