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4-12
4. Troubleshooting
4-1-5. No Video (Video CVBS 1, 2)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Video CVBS source
Check the SEMS03.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
Check JA5004 or JA5005
Change the Main Assy
BN94-02709A
No
Yes
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the video source and
check the connection of video cable?
No
Input the video source properly.
Yes
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the CVBS data appear at
R5030(AV1), L5002(AV2)?
Does the digital data appear at
TP8007 (FBE_HSYNC_IN)
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
No
Check IC8003 (FBE)
Change the Main Assy
BN94-02709A
2
No
Check a set
in the ‘Stand-by mode’.
4
Caution
Make sure to disconnect the power before working on the IP board.
www.freeservicemanuals.info
11/8/15
Published in Heiloo, Holland.