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2. Digital TV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L5003
Replace L5003
Check Tuner 1.2V Power
IC5001 2 pin : 1.2V
Check IF_P/N Signal
TU5001 17/18 Pin
Check Demodulator Input
Clock(X1005-25Mhz)
Replace X1005
Check IC1004(LGDT) Output
- AR1070, AR1071
Replace IC5001.
Check Tuner 5V Power
L5004
Check +5V_USB Voltage
IC401
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
ok
ok
ok
ok
ok
ok
No
No
No
No
No
No
No
Replace IC401
No
Bad Tuner. Replace Tuner.
Replace IC1004
Replace L5004
ok
Check IC1004(LGDT) VCC
ok
No
Check VCCIN/OUT
IC1001,IC100
No
Replace IC1001,IC100
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