No Video (Video AV)
*Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
Symptom
Audio is normal but no picture is displayed on the screen.
•
Major
checkpoints
Check the Video CVBS source
•
This may happen when the LVDS cable connecting the Main Board and the Panel is
•
disconnected.
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
No
Check a set in the ‘Stand-by mode’.
Yes
Check the video source and
check the connection of video cable?
No
Input the video source properly.
Yes
2
Check the LVDS clk signal at output of
Main board.(TX)
TX2_CLK : ODD_TXCLK_DN/DP
TX4_CLK : EVEN_TXCLK_DN/DP
No
Check IC1001(X12).
Change the Main Ass’y.
Yes
Check the LVDS cable?
Replace the T-con / LCD panel?
No
Please, Contact Tech support.
Caution
Make sure to disconnect the power before working on the IP board.
4-12
4. Troubleshooting
Содержание UA32F45 Series
Страница 29: ...Inside View Main Ass y 20P Cable LVDS T Con Speaker Power Ass y 4 2 4 Troubleshooting ...
Страница 32: ...WAVEFORMS 1 HDMI input RX_Data RX_Clk 2 LVDS output 4 5 4 Troubleshooting ...
Страница 34: ...Location of Parts Main Board_Front C A B Detail A Pin 1 B1 8V Pin 4 B3 3V B C 4 7 4 Troubleshooting ...
Страница 35: ...WAVEFORMS 1 CVBS OUT Grey Bar 2 LVDS output 4 8 4 Troubleshooting ...
Страница 37: ...Location of Parts Main Board_Front B A Detail A Pin 1 B1 8V Pin 4 B3 3V B 4 10 4 Troubleshooting ...
Страница 38: ...WAVEFORMS 1 LVDS output 2 CH_CLK CH_VALID 4 11 4 Troubleshooting ...
Страница 40: ...Location of Parts Main Board_Front B A Detail A R816 COMP2_Y_CVBS B 4 13 4 Troubleshooting ...
Страница 41: ...WAVEFORMS 1 CVBS OUT Grey Bar 2 LVDS output 4 14 4 Troubleshooting ...
Страница 44: ...WAVEFORMS 1 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output 4 17 4 Troubleshooting ...
Страница 47: ...WAVEFORMS 1 MCLK LRCLK PCM_I2C_DATA 2 Speaker Monitor OUT SPDIF OUT 4 20 4 Troubleshooting ...