Samsung LN-4692D, Service Manual

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4 Troubleshooting
4-6
4-4 No Picture (Tuner_CVBS)
Check a RF source and
check the connection of RF
cable ?
Input a RF signal.
Check a connected cable.
Yes
Does the signal appear at
the main splitter cable ?
Check CN501.
Check splitter cable connection.
Change a main PCB ass'y or splitter
cable.
Yes
Does the signal appear at
C912 ?
Check TU501.
Change a main PCB ass'y or tuner.
Yes
Does the digital data
appear at output of
R1034-7, R1039 ?
Check IC901
Change a main PCB ass'y
Yes
Does the digital data
appear at output of R1010-
5, R1024-7 ?
Check IC1002
Change a main PCB ass'y
Yes
Check a LVDS cable ?
Replace a LCD panel ?
Yes
Power Indicator is off.
Lamp on, no picture.
No
No
No
No
No
Please, Call to Samsung Co. LTD.
No
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