4-4
4. Troubleshooting
No video (HDMI 1, 2 - Digital signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the HDMI source.
-
Check the HDMI switch, Check the Main Chipset.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Does the signal appear at
CN601 (Pin#12 , #7 )(HDMI1)
CN604 (Pin#12 , #7 )(HDMI2)
(HDMI RX_Clk , RX_Data) ?
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 HDMI signal properly.
Please, Contact Tech support.
Check CN601, CN604
CN602, CN603.
Check HDMI cable.
Change the Main Assy.
Check IC1001 (X6).
Change the Main Assy.
No
No
No
No
No
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the HDMI source and
check the connection of HDMI cable ?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
3
2
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for LE32D400E1W
Page 20: ...2 14 2 Product specifications 2 4 2 e Manual How to view the e Manual ...
Page 21: ...2 15 2 Product specifications ...
Page 31: ...4 3 4 Troubleshooting Main Board_Bottom ...
Page 33: ...4 5 4 Troubleshooting Main Board_Top ...
Page 34: ...4 6 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Page 36: ...4 8 4 Troubleshooting Main Board_Top ...
Page 37: ...4 9 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Page 39: ...4 11 4 Troubleshooting Main Board_Top ...
Page 40: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Page 42: ...4 14 4 Troubleshooting Main Board_Top ...
Page 43: ...4 15 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Page 45: ...4 17 4 Troubleshooting Main Board_Bottom ...
Page 46: ...4 18 4 Troubleshooting WAVEFORMS 7 Speaker out ...
Page 48: ...4 20 4 Troubleshooting Main Board_Bottom ...
Page 50: ...4 22 4 Troubleshooting Main Board_Top ...
Page 51: ...4 23 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Page 53: ...4 25 4 Troubleshooting Main Board_Top ...
Page 54: ...4 26 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Page 56: ...4 28 4 Troubleshooting Main Board_Top ...
Page 57: ...4 29 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Page 59: ...4 31 4 Troubleshooting Main Board_Top ...
Page 60: ...4 32 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Page 62: ...4 34 4 Troubleshooting Main Board_Bottom ...
Page 63: ...4 35 4 Troubleshooting WAVEFORMS 7 Speaker out ...
Page 78: ...4 50 4 Troubleshooting TOP BOTTOM INNER 1 INNER 2 ...
Page 79: ...4 51 4 Troubleshooting Non Filp UE22D5003BW UE19D4003BW PCB ...
Page 80: ...4 52 4 Troubleshooting TOP BOTTOM INNER 1 INNER 2 ...
Page 83: ...4 55 4 Troubleshooting UD5003 40 Model Inch CODE P N UD5003 40 BN44 00473A PSLF121A03S ...
Page 85: ...4 57 4 Troubleshooting SMPS_LD503 32 Model Inch CODE P N LD503 32 BN44 00469B IV40F1_BHS ...