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4. Troubleshooting
4-1-5. No Video (Video CVBS 1, 2)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the Video CVBS source
-
Major
Check the SEMS03.
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
4
2
Caution
Make sure to disconnect the power before working on the IP board.
4-12
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the video source and
check the connection of video cable?
Yes
Does the CVBS data appear at
R5030(AV1), L5002(AV2)?
Yes
Does the digital data appear at
TP8007 (FBE_HSYNC_IN)
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
in the 'Stand-by mode'.
No
Input the video source properly.
Check JA5004 or JA5005
No
Change the Main Assy
BN94-02709A
Check IC8003 (FBE)
No
Change the Main Assy
BN94-02709A
No
Please, Contact Tech support
Check a set
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