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4-1-3. No Video (HDMI 1, 2, 3 - Digital Signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the HDMI source.
-
Major
Check the HDMI switch, Check the SEMS03.
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
3
2
Caution
Make sure to disconnect the power before working on the IP board.
Power Indicator is off.
Lamp(Backlight) Off, no video?
Yes
Check the HDMI source and check
the connection of HDMI cable?
Yes
Does the signal appear at
R6025 (Pin#10 , #6 )(HDMI1)
R6105 (Pin#10 , #6 )(HDMI2)
R6014 (Pin#10 , #6 )(HDMI3)
(HDMI RX_Clk , RX_Data)?
Yes
Does the digital data appear at
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 HDMI signal properly
Check JA3001~3
No
Check HDMI cable
Change the Main Assy
Check CN8001_HD
No
Change the Main Assy
No
Please, Contact Tech support
4. Troubleshooting
Check a set
4-7
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