4-7
4. Troubleshooting
4-1-4. No Video (Tuner_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Tuner CVBS source
Check the SEMS01
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Check a B+ voltage (#3 of Tuner) 5V,
change a main PCB ass’y.
No
No
Power Indicator is off.
Lamp on, no picure.
Yes
Change a main PCB ass’y.
Does the signal appear at L3001?
Does the signal appear at R3169?
No
Please, Call to Samsung Co. LTD.
Check the LVDS cable?
Replace the LCD panel?
Yes
Connect the RF cable and
check RF signal.
Yes
1
2
Caution
Make sure to disconnect the power before working on the SMPS/IP.
Содержание LE19A65 A Series
Страница 53: ...1 4 1 Precautions Memo ...
Страница 63: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal ...
Страница 65: ...4 6 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data ...
Страница 67: ...4 8 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal ...
Страница 69: ...4 10 4 Troubleshooting WAVEFORMS 6 The Signal are Inputed to IC2002 7 The Signal are Inputed to IC2001 ...
Страница 89: ...6 4 6 Wiring Diagram 6 2 Wiring Picture 6 2 1 LE19A656A 6 2 2 LE19A651A ...
Страница 90: ...6 5 6 Wiring Diagram 6 2 3 LE22A656A 6 2 4 LE19A651A ...
Страница 92: ...6 7 6 Wiring Diagram 6 4 Cables Code BN39 00953D 30P 200mm Photo ...
Страница 93: ...6 8 6 Wiring Diagram Memo ...