4-17
4. Troubleshooting
4-1-7. No Video (Video CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
T
Major
checkpoints
Check the Video CVBS source
T
Check the Chelsea.
T
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
T
Diagnostics
Does the CVBS data appear at
TP-COMP1_Y TP-SIDE_AV_CVBS ?
Does the digital data appear at
TP-, E_TXCLK-,
, O_TXCLK- ?
Yes
Yes
Yes
Yes
Check a set in the 'Stand-by mode'
Input the video source properly.
Please, Contact Tech support.
Check CN701, CN704.
Change the Main Assy.
C450: BN94-03377Z
C459: BN94-03377M
C539: BN94-03379B
Check IC301 (SX1)
Change the Main Assy.
C450: BN94-03377Z
C459: BN94-03377M
C539: BN94-03379B
No
No
No
No
No
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the video source and
check the connection of video cable?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
4
2
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LN26C450E1H
Страница 23: ...4 4 4 Troubleshooting BD219 BD213 A5V B13VS B13V B5V F1 40 T Con Pin 1 5 ...
Страница 25: ...4 6 4 Troubleshooting PC_VS PC_HS PC_B PC_R PC_G O_TXCLK O_TXCLK C_TXCLK E_TXCLK ...
Страница 26: ...4 7 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 28: ...4 9 4 Troubleshooting O_TXCLK O_TXCLK C_TXCLK E_TXCLK ...
Страница 29: ...4 10 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 31: ...4 12 4 Troubleshooting O_TXCLK O_TXCLK C_TXCLK E_TXCLK BI_5V VT ...
Страница 32: ...4 13 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 34: ...4 15 4 Troubleshooting O_TXCLK O_TXCLK C_TXCLK E_TXCLK BI_5V VT ...
Страница 35: ...4 16 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 37: ...4 18 4 Troubleshooting O_TXCLK O_TXCLK C_TXCLK E_TXCLK SIDE_AV_CVBS COMP1_Y ...
Страница 38: ...4 19 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 40: ...4 21 4 Troubleshooting O_TXCLK O_TXCLK C_TXCLK E_TXCLK COMP1_Y COMP1_PR COMP1_PB ...
Страница 41: ...4 22 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 43: ...4 24 4 Troubleshooting B13VS A3 3V TP915 COMP1_SR L L R R COMP1_SL TP914 SIDE_AV_SL SIDE_AV_SR ...
Страница 44: ...4 25 4 Troubleshooting WAVEFORMS 7 Speaker out ...
Страница 46: ...4 27 4 Troubleshooting PIN 3 TP1619 TP1613 TP1615 TP1614 TP1620 ...
Страница 47: ...4 28 4 Troubleshooting WAVEFORMS 0 Clock of IC161I ...
Страница 80: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram C539 37 C450 C459 26 32 ...
Страница 81: ...6 2 6 Wiring Diagram C530 C539 40 46 ...