4-11
4. Troubleshooting
4-1-6. No Picture (S-VIDEO_Y,C)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the S-Video_Y,C source
Check the SEMT01(MT8226)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
2
1
No
Check a connection harness.
No
Power Indicator is off.
Lamp on, no picure.
Does the Y/C signal appear at C5104,
C5105 of IC5105?
No
Please, Contact Tech support.
Check a LVDS cable?
Replacea lcd panel?
Yes
Connect the s-video cable.
Operating a video player.
1
Yes
2
Does the digital data appear at the
output of LVDS (RA5104~RA5109)?
No
Check a IC5105
Change a main PCB ass’y
Yes
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for LE32A55*P
Page 8: ...1 4 1 Precautions Memo ...
Page 24: ...3 6 3 Disassembly and Reassemble 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 228: ...5 166 5 Exploded View Part List Memo ...
Page 229: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram ...
Page 230: ...6 2 6 Wiring Diagram ...
Page 231: ...6 3 6 Wiring Diagram 6 2 Wiring Picture ...
Page 234: ...6 6 6 Wiring Diagram Memo ...
Page 235: ...7 1 7 Schematic Diagram 7 Schematic Diagram 7 1 MT8226 EMMA Block Diagram ...
Page 237: ...7 3 7 Schematic Diagram 7 3 Schematic Diagrams 7 3 1 MAIN POWER BLOCK ...
Page 238: ...7 4 7 Schematic Diagram 7 3 2 SOUND 7 3 3 Jack_In_Out 1 Function ...
Page 239: ...7 5 7 Schematic Diagram 7 3 4 Jack_In_Out 2 HDMI_Switch 7 3 5 Jack_In_Out 3 Tuner ...
Page 240: ...7 6 7 Schematic Diagram 7 3 6 Scaler 1 Flash memory Sub Micom 7 3 7 Scaler 2 Main DDR ...
Page 241: ...7 7 7 Schematic Diagram 7 3 8 Scaler Power Service 7 3 9 FBE3 LVDS Out ...
Page 242: ...7 8 7 Schematic Diagram 7 3 10 Emma2 DTV DDR 7 3 11 Emma2SL PCMCIA Flash memory ...