Sunday, December 09, 2012

SAMSUNG - LE SERIES LCD TVs _ TROUBLESHOOTING _ SERVICE MODE






APPLICABLE TO:

LE32B55* LE37B55* LE40B55* LE46B55* LE32B65* LE37B65* LE40B65* LE46B65* LE55B65* LE32B57* LE37B57* LE40B57* LE46B57* LE32B67* LE37B67* LE40B67* LE46B67* LE55B67* LE40B62* LE46B62* LE52B62* LE40B75* LE46B75* LE52B75*

TROUBLESHOOTING
  • Check the various cable connections first.
  • Check to see if there is a burnt or damaged cable.
  • Check to see if there is a disconnected or loose cable connection.
  • Check to see if the cables are connected according to the connection diagram.
Check the power input to the Main Board.
  1. Check the Power input to the FRC(Frame Rate Conversion) Board.
  2. Check internal Pattern both of FRC and FBE3 if there is some picture noise.
  3. FRC: Factory mode(Info - MENU - MUTE - power on) -> Control ->Test Pattern -> FRC PATT_Before DDR / FRC PATT_AfterDDR -> Press right button of Remocon.
  4. FBE: Factory mode(Info - MENU - MUTE - power on_ ->Control -> Test Pattern -> FBE Pattern Sel -> Press right button of Remocon.
  5. Case1: FBE ok,FRC NG: change the FRC Board Case2: FBE NG: change the main Board


  • Check the LED lamp for source button on front.
  • If this LED blank 100mS frequently then FRC board is defective (communication problem via Main board).  In this case change the FRC board.
TO ENTER SERVICE MODE

To enter ‘Service Mode’ Press the remote -control keys in this sequence :   
  • If you do not have Factory remote – control

{ INFO =>  MENU =>  MUTE =>  Power on }
  • If you have Factory remote – control

{ PICTURE ON =>  DISPLAY =>  FACTORY }

The buttons are active in the service mode.

  • Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key (0~9).
  • Function - Control Key : Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO (Enter).
TROUBLESHOOTING HINTS



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:
1.       Check the internal cable connection status inside the unit.
2.       Check the fuses of each part.
3.       Check the output voltage of SMPS.
4.       Replace the Main Board.
Symptom
Audio is normal but no picture is displayed on the screen.
Major
checkpoints
1.       Check the PC source
2.       Check the IC6001(SDP84)
3.       This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Symptom
Audio is normal but no picture is displayed on the screen.
Major
checkpoints
1.       Check the HDMI source
2.       Check the IC3013
3.       This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Symptom
Audio is normal but no picture is displayed on the screen.
Major
checkpoints
1.       Check the Tuner CVBS source
2.       Check the IC6001(SDP84)
3.       This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Symptom
Audio is normal but no picture is displayed on the screen.
Major
checkpoints
1.       Check the Video Source
2.       Check the IC6002, IC6001(SDP84), IC7001
3.       This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Symptom
Picture is normal But no Sound
Major
checkpoints
1.       Check the RF Source
2.       Check the IC6001(SDP84)
This may be happened when LVDS Cable is Connected between Panel and Main Board , But Sound cable is disconnected.
Defective image
No Picture and normal sound in case of defective a Panel or a defective connector between main board and panel.


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