No Picture (Tuner_Dtv) - Samsung 2333HD Service Manual

4-6. No Picture (Tuner_DTV)

Symptom The LED power turns on but the screen is blank when the Antenna Cable is connected.
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Even though the LED power turns on, the screen is blank when connecting the Antenna Cable.
-
Check the Antenna Cable connections.
Major -
checkpoints
Check whether the LVDS cable is connected correctly to the panel.
-
Check whether the lamp connector of the panel is connected correctly to the IP board.
-
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
Power Indicator is off.
Lamp on, No signal image.
Yes
④ Does the signal appear at
R5899?
Yes
④ Does the signal appear at
#16~25of TU5003?
Yes
Check a LVDS cable?
Replace lcd panel?
IC4010
Main Board Front
No
No
No
No
4. Troubleshooting
TU5003
check antenna cable
Check the Tuner Vcc 5V.
Change a main PBA.
check antenna cable
Change a main PBA
Please, Call to Samsung Co. LTD.
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