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 SEMT01(MT8226)
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
Pin17,18,20,21,23,24 of IC3108?
Power Indicator is off.
Lamp on, no video.
No
Check the connection
of HDMI cable?
Check a IC3108.
Change a main PCB ass’y.
Check a IC5105.
Change a main PCB ass’y.
No
Does the digital data appear at output
of LVDS (RA5104~RA5109)?
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.
Summary of Contents for LE32A65 A Series
Page 8: ...1 4 1 Precautions Memo ...
Page 28: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal ...
Page 30: ...4 6 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data ...
Page 32: ...4 8 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal ...
Page 34: ...4 10 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal ...
Page 36: ...4 12 4 Troubleshooting WAVEFORMS 2 Digital Output Data 5 Analog Signal Y C ...
Page 315: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram ...
Page 316: ...6 2 6 Wiring Diagram ...
Page 317: ...6 3 6 Wiring Diagram 6 2 Wiring Picture ...
Page 320: ...6 6 6 Wiring Diagram Memo ...
Page 321: ...7 1 7 Schematic Diagram 7 Schematic Diagram 7 1 MT8226 EMMA Block Diagram ...
Page 323: ...7 3 7 Schematic Diagram 7 3 Schematic Diagrams 7 3 1 MAIN POWER BLOCK ...
Page 324: ...7 4 7 Schematic Diagram 7 3 2 SOUND 7 3 3 Jack_In_Out 1 Function ...
Page 325: ...7 5 7 Schematic Diagram 7 3 4 Jack_In_Out 2 HDMI_Switch 7 3 5 Jack_In_Out 3 Tuner ...
Page 326: ...7 6 7 Schematic Diagram 7 3 6 Scaler 1 Flash memory Sub Micom 7 3 7 Scaler 2 Main DDR ...
Page 327: ...7 7 7 Schematic Diagram 7 3 8 Scaler Power Service 7 3 9 FBE3 LVDS Out ...
Page 328: ...7 8 7 Schematic Diagram 7 3 10 Emma2 DTV DDR 7 3 11 Emma2SL PCMCIA Flash memory ...