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4-17
4. Troubleshooting
4-1-7. No Video (Video CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Video CVBS source
-
Check the Chelsea.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the video source and
check the connection of video cable?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
Does the digital data appear at
TP-, E_TXCLK- ,
, O_TXCLK-?
Does the CVBS data appear at
TP - AV_CVBS?
Check a set in the 'Stand-by mode'.
Input the video source properly.
Please, Contact Tech support.
Check IC1102 (SX1).
Change the Main Assy.
Check CN801.
Change the Main Assy.
Yes
Yes
Yes
Yes
No
No
No
No
No
2
4
Caution
Make sure to disconnect the power before working on the IP board.
All manuals and user guides at all-guides.com
Summary of Contents for LA32C550J1F
Page 49: ...4 4 4 Troubleshooting MAINBOARD T T CON All manuals and user guides at all guides com ...
Page 54: ...4 9 4 Troubleshooting MAINBOARD T All manuals and user guides at all guides com ...
Page 57: ...4 12 4 Troubleshooting MAINBOARD T All manuals and user guides at all guides com ...
Page 58: ...4 13 4 Troubleshooting WAVEFORMS 2 LVDS output All manuals and user guides at all guides com ...
Page 60: ...4 15 4 Troubleshooting MAINBOARD T All manuals and user guides at all guides com ...
Page 63: ...4 18 4 Troubleshooting MAINBOARD B All manuals and user guides at all guides com ...
Page 69: ...4 24 4 Troubleshooting MAINBOARD B MAINBOARD T All manuals and user guides at all guides com ...
Page 70: ...4 25 4 Troubleshooting WAVEFORMS 6 Speaker out All manuals and user guides at all guides com ...