Vizio SV420M bad caps? Please help.

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  • TubeJunkie
    Senior Member
    • Oct 2012
    • 107
    • USA
    #1

    Vizio SV420M bad caps? Please help.

    I have a Vizio SV420m LCD tv. Sometimes I get these white lines on the screen. Sometimes it will make the screen go black, but still have sound. And sometimes it works perfect. I've taken the back off and reattached the stand base, and check for loose components with a wood stick, but nothing changes while poking around the back while powered on. From my past experience, this usually means bad caps on power supply board. None look bulged, we all know this don't mean they're good. Most manufactures use cheap parts. Especially capacitors. Any advise, direction, or comments are welcomed and much appreciated. Thanks for your time .
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    • Laith
      Member
      • May 2013
      • 12
      • Jordan
      #2
      Re: Vizio SV420M bad caps? Please help.

      My friend have a similar problem with an LG TV , i found some water sneaking to the tv around the cable which comes from outside!! i'd probably change every cap on the power board and maybe resolder every joint but he wouldn't allow me to .. as he says "its on warranty" lol

        Comment

        • TubeJunkie
          Senior Member
          • Oct 2012
          • 107
          • USA
          #3
          Re: Vizio SV420M bad caps? Please help.

          I replaced all caps on the power supply board. The tv only has the lines when I first turn it on. Last a few minutes then goes away. And works perfect all day. There's one cap on the input/signal board. So I'm gonna replace it.

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