4-2-5. No Video (Video AV)
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)
TX6_CLK : TCON SDA
-
TX8_DATA : TCON SCL
-
No
Check IC1400(NT14U).
Change the Main Ass’y.
Yes
Check the LVDS cable?
Replace the T CON / LCD panel?
Yes
Please, Contact tech support.
Caution
Make sure to disconnect the power before working on the IP Board.
4-16
4. Troubleshooting
Содержание UN HU7250F Series
Страница 19: ...2 6 2 Product specifications Item UN HU7250FXZA Accessory Slim Gender Cable N A ...
Страница 36: ...Waveforms 1 HDMI input RX_Data RX_Clk 2 LVDS output 4 9 4 Troubleshooting ...
Страница 39: ...Waveforms 1 CVBS OUT Grey Bar 3 LVDS output 4 12 4 Troubleshooting ...
Страница 41: ...Location of Parts Main Board_Front Tuner 1 2 Detail 1 Pin 4 B3 3V Pin 1 A3 3V 2 4 14 4 Troubleshooting ...
Страница 42: ...Waveforms 2 CH_CLK CH_VALID 2 CH_CLK CH_VALID 3 LVDS output 4 15 4 Troubleshooting ...
Страница 44: ...Location of Parts Main Board_Front 1 2 Detail 1 R1019 C1011 COMP2_Y_CVBS 2 4 17 4 Troubleshooting ...
Страница 45: ...Waveforms 1 CVBS OUT Grey Bar 3 LVDS output 4 18 4 Troubleshooting ...
Страница 69: ...Factory Menu Name Data Range B10_Gain Advanced 4 42 4 Troubleshooting ...