Samsung UE B7000WW Series, Service Manual

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4-12
4. Troubleshooting
4-1-3. No Video (HDMI - Digital Signal)
Symptom Audio is normal but no picture is displayed on the screen.
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Major
checkpoints
Check the HDMI source
Check the IC7001(chelsea)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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Caution Make sure to disconnect the power before working on the IP board.
Diagnostics
Check CN3013, 3016, 3015, 3010
(HDMI1,2,3,4)
Change the HDMI cable, Chagne the
main PCB assembly.
No
Yes
Dose the digital data appear at output
of IC3013 pin89~99(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
Check IC3013
Change 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 IC3013
pin2~12(HDMI1), pin14~24(HDMI2),
pin27~37(HDMI3), pin39~49(HDMI4)?
Does the digital data appear at pin
14~42 of CN7005?
No
Check IC7001
Change the main PCB assembly
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