Samsung LN52B75

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  • phil@philporter.com
    Senior Member
    • May 2013
    • 113
    • United States
    #1

    Samsung LN52B75

    Had a power spike but see no signs on the power supply board - no bubbled caps and fuses show continuity. There is the small red light at on/off area in front of TV
    When I unplugged the ribbon cable to the main board the display lights up. How likely will another main board fix this problem?
    Attached Files
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Samsung LN52B75

      "When I unplugged the ribbon cable to the main board the display lights up" So the inverter, the backlights, and the power supply for the inverter are OK. So I would say you do have main board problem, but you should try disconnecting the LVDS cable between the main board and the T-CON and see if you can turn the TV on and have backlights.
      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

        Comment

        • phil@philporter.com
          Senior Member
          • May 2013
          • 113
          • United States
          #3
          Re: Samsung LN52B75

          Replaced the main board. All works fine now. Thanks.

            Comment

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