lg 42lg50 no power or standby but found this

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  • TechOp
    Member
    • Oct 2013
    • 21
    • USA
    #1

    lg 42lg50 no power or standby but found this

    I found a burnt chip on the mainboard i could replace but one thing doesnt make sense. On the schematic ic802 looks like it only controls the hdmi. Does anyone believe this could be the only problem on the board?

    I dont think so....so why isnt the tv on with no hdmi?

    All the voltages coming from the ps are good. 5v 12v.

    Im going to retake the mb photo i see its not clear.
    Attached Files
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    Anything can be fixed with enough TIME and enough MONEY
    Tags: None
    • mmartell
      Badcaps Legend
      • Oct 2013
      • 3189
      • Canada
      #2
      Re: lg 42lg50 no power or standby but found this

      Try removing it in case it's shorting and pulling down one of the supplies.

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK
          #3
          Re: lg 42lg50 no power or standby but found this

          When an IC related to HDMI blows that bad, it indicates a power surge has affected the HDMI ports. This has almost certainly caused other problems & replacing or removing that IC is unlikely to clear the fault.

          A testament to the energy dumped into the IC at that moment is how the plastic over the silicon has been completely blown off.
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

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