4-5
4. Troubleshooting
4-1-3. No Video (HDMI - Digital Signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the HDMI source
Check the IC3013
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
1
3
2
No
Does the digital data appear at
RA3668~RA3671 around IC3013?
Power Indicator is off.
Lamp on, no video.
No
Check the connection
of HDMI cable?
Check a IC3013
Change a main PCB ass’y.
Check a IC7001
Change a main PCB ass’y.
No
Does the digital data appear at output
of LVDS (TP7025~TP7038 ,
TP7040~TP7053)?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Yes
Input a HDMI cable.
Yes
Yes
2
3
1
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE37B55 series
Страница 7: ...1 4 1 Precautions Memo...
Страница 39: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B H_sync input signal of IC6001 SDP84...
Страница 41: ...4 6 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data...
Страница 43: ...4 8 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal...
Страница 45: ...4 10 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal at C6852 C6853 C6854...
Страница 47: ...4 12 4 Troubleshooting WAVEFORMS 6 The Signal are Inputed to IC2002 7 The Signal are Inputed to IC2002...
Страница 475: ...5 410 5 Exploded View Part List...