4-13
4. Troubleshooting
4-1-7. No Video (S-Video 1, 2)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the S-Video source
Check the MSD2248AL
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
Check JA806S or Side-AV
Change the main PCB ass’y or
Side-AV assembly
No
Yes
Power Indicator is off.
Lamp(Backlight) Off, no video
Yes
Check the video source and
check the connection of
video cable?
No
Input a video signal.
Check the connected cable.
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the digital data appear at output
of R5006~R5020, R5022~R5029?
No
Check IC3001
Change the main PCB assembly
9
6
Does the signal appear
at C3022 and C3023?
Yes
Does the digital data appear at output
of R3082F~R3095F?
No
Check IC4001
Change the main PCB assembly
7
Yes
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LN32A450C1D
Страница 6: ...1 4 1 Precautions Memo ...
Страница 18: ...3 6 3 Disassembly and Reassemble Memo ...
Страница 22: ...4 4 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Страница 24: ...4 6 4 Troubleshooting WAVEFORMS 4 5 HDMI Input CLK 6 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Страница 30: ...4 12 4 Troubleshooting WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Страница 36: ...4 18 4 Troubleshooting WAVEFORMS Audio Input Sign Wave 12S Input Clk Data Audio Amp Out Sign Wave ...
Страница 50: ...4 32 4 Troubleshooting Memo ...
Страница 107: ...6 4 6 Wiring Diagram Memo ...
Страница 108: ...7 1 7 Schematic Diagram 7 Schematic Diagram 7 1 Internal Block Diagram of Scaler MSD2248AL ...
Страница 109: ...7 2 7 Schematic Diagram 7 2 SCHEMATIC Block Diagram ...
Страница 110: ...7 3 7 Schematic Diagram 7 3 SlimHalf Tuner Diagram ...
Страница 111: ...7 4 7 Schematic Diagram 7 2 Schematic Diagrams 7 2 1 STANDBY ...
Страница 112: ...7 5 7 Schematic Diagram 7 2 2 FUNCTION KEY 7 2 3 LCD OPTION ...
Страница 113: ...7 6 7 Schematic Diagram 7 2 4 FBE ...
Страница 114: ...7 7 7 Schematic Diagram 7 2 5 ATSC HALF NIM TUNER 7 2 6 DVI SOUND INPUT ...
Страница 115: ...7 8 7 Schematic Diagram 7 2 7 HDMI INPUT ...
Страница 116: ...7 9 7 Schematic Diagram 7 2 8 SIDE HDMI CONNECTOR 7 2 9 SOUND AMP ...
Страница 117: ...7 10 7 Schematic Diagram Memo ...