4-2-4. No Video
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
1
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(X14H)
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.
4-11
4. Troubleshooting
Содержание HG32ED590HB
Страница 37: ...Location of Parts Main Board_Front 1 2 2 CN201 Detail 1 Q202 2 Q206 2 L201 4 4 4 Troubleshooting...
Страница 39: ...Location of Parts Main Board_Front 2 CN1402_FHD 1 HDMI1 HDMI2 Detail 1 CN501_H2 CN502 2 4 6 4 Troubleshooting...
Страница 40: ...Waveforms 1 HDMI input RX_Data RX_Clk 2 LVDS output 4 7 4 Troubleshooting...
Страница 43: ...Waveforms 1 CVBS OUT Grey Bar 3 LVDS output 4 10 4 Troubleshooting...
Страница 45: ...Location of Parts Main Board_Front 2 CN1402_FHD 1 IC1001 Detail 1 2 4 12 4 Troubleshooting...
Страница 46: ...Waveforms 1 CVBS OUT Grey Bar 2 LVDS output 4 13 4 Troubleshooting...
