SAMSUNG UE32EH4003W Backlight

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  • pyrosster
    Member
    • Aug 2013
    • 43
    • Spain
    #1

    SAMSUNG UE32EH4003W Backlight

    Hi guys

    Got this tv today and it doesn't turn on the backlight.
    The voltages on the power supply are good and and I'm wondering what else can I look?

    The voltages on the power supply are:

    CN803
    1-2 PWM_DIM = 13V
    3-4 B13V = 13V
    5-6 BLL_ON/OFF = 13V
    7-8 VAMP = 13V
    9-10 GND = 0V
    11-12 A5V = 5.3V
    13-14 POWER_ON/OFF = 5.3V

    CN802 -> LED BACKLIGHT
    1 D+ 0V
    2 S- 170V
    3 NC
    4 S+ 170V
    5 D- 170V

    These voltages for the led backlight are ok?

    Thanks for your help!!
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: SAMSUNG UE32EH4003W Backlight

      Your LED driver Voltage is fine, it is more likely that you have open circuit in the LED strings.
      How about some good clear pictures of the whole back side and the boards?
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

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