4-1-5. No Video (Tuner DTV)
Symptom Audio is normal but no picture is displayed on the screen. -
Major
checkpoints
Check the DTV source -
Check the Tuner (TU601) -
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. -
Diagnostics
Check the D-TV source.
No
Yes
Does the DC TU5V_PW, TU33V_PW
appear at #2, #4 Pin of Tuner?
No
Yes
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the connection of RF cable ?
No
Insert the RF cable properly.
Yes
Change the Main Assy.
LC350_26": BN44-00368A
LC350_32" : BN41-00369A
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support.
No
Check the ‘signal strength’
in Self Diagnosis menu
Strength is enough?
Does the digital data appear at
Pin #16,17 (LVDS Data clk)
of LVDS connector?
No
Check IC201 (Saturn4).
Change the Main Assy.
LC350_26": BN44-00368A
LC350_32" : BN41-00369A
2
No
Check if the set is in
'Stand-by mode.'
Caution Make sure to disconnect the power before working on the IP board.
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