LG 42lh200c no standby

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  • superg
    Senior Member
    • Dec 2013
    • 58
    • Barbados
    #1

    LG 42lh200c no standby

    hi
    This tv had a dead lizard stuck under the power supply. I immediately assumed a bad power supply but on further checks found the 5.2V standby fluctuating between ~1V to 4+V. Unplugging the main board and it remains steady. Am I looking at a faulty main board?
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: LG 42lh200c no standby

      Put 10 Ohms 5W resistor to simulate 500mA load as the load to see if 5.2V will be stable. Pictures of the board? It sounds like bad startup cap.
      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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