4-19
4. Troubleshooting
4-1-7. No Video (Component)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
-
Check the Saturn4(IC201)
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Does the component data appear at
COMP_YCVBS, COMP_PB,
COMP_PR ?
No
Yes
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
No
Insert the component
source properly.
Yes
Check CN705.
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
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.'
5
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for LN26C350D1D
Page 23: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Page 25: ...4 8 4 Troubleshooting Location Main TOP BOTTOM A B Detail A Pin 7 Pin 12 B LVDS CLK LVDS CLK ...
Page 26: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Page 29: ...4 12 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Page 32: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Page 34: ...4 17 4 Troubleshooting Location Main TOP BOTTOM B A Detail A COMP_YCVBS B LVDS CLK LVDS CLK ...
Page 35: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Page 38: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Page 41: ...4 24 4 Troubleshooting WAVEFORMS 6 I2C Data 7 Speaker out ...
Page 67: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram ...