Samsung UN46C9000ZF, Service Manual

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4-15
4. Troubleshooting
4-1-3. No Video (HDMI - Digital Signal)
Symptom Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the HDMI source
-
Check the IC1001(Valencia)
-
Check if the LVDS cable is loose or not.
-
Diagnostics
First of all check the setting of the
external device.
And then check the HDMI cable.
If the problem still occurs,
replace the Main Board.
No
Yes
Does the digital data appear at output of
IC501 pin80~87(HDMI output)?
No
Yes
No video
Yes
Check the HDMI source and
check the connection of HDMI cable?
No
Input an HDMI signal.
Check the connected cable.
Yes
Change the IC501 or
the main PCB assembly.
Yes
Check the LVDS cable?
Check the T-con board?
Replace the LCD panel?
Please, contact Tech support.
No
Does the signal appear at
IC501 pin1~6, 99, 100(HDMI1),
pin8~15(HDMI2), pin17~24(HDMI3),
pin26~33(HDMI4)?
Does the digital data appear at
Pin 11~81 of CN1602 ?
No
Change the IC1001 or
the main PCB assembly.
4
5
7
Caution Make sure to disconnect the power before working on the PD board.
Notice Refer to the next page for detailed locations.