4-19
4. Troubleshooting
4-1-3. Non Filp
(UE22D5003BW*** / UE19D4003BW***)
No Power
Symptom
The LEDs on the front panel do not work when connecting the power cord.
-
The SMPS relay does not work when connecting the power cord.
-
The units appears to be dead.
-
Major
checkpoints
The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
Check the internal cable connection status inside the unit.
-
Check the fuses of each part.
-
Check the output voltage of SMPS.
-
Replace the Main Board.
-
Diagnostics
Yes
Change the 14p power cable.
No
Lamp(Backlight) Off,
power indicator LED on?
Yes
Change INVERTER/BALANCE B'D.
No
Lamp(Backlight) Off,
power indicator LED on ?
Yes
Change the LVDS cable.
No
Does proper DC B13V appear at
LVDS connector Pin #1~5 of Panel ?
Check a other function.
(No picture part)
Replace a LCD Panel.
No
A power is supplied to set?
Change the Main Assy.
No
No
No
No
Yes
Does proper Stand-By DC A5V
appear at VIA - A5V_PW ?
Yes
Does proper Main DC B13V, B5V
appear at VIA - B13V_PW, B5V_PW ?
Yes
Does proper DC A3.3V
appear at VIA - A3.3V_PW ?
Yes
Does proper B3.3V, B1.5V appear at
VIA - B3.3V_PW, B1.5V_PW
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 ...