VIZIO E420VO on then shuts off.

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  • travwise
    New Member
    • Apr 2013
    • 1
    • USA
    #1

    VIZIO E420VO on then shuts off.

    Greetings,

    I have a VIZIO 42" television, model E420VO.

    When I turn on the set it powers on, shows the VIZIO logo on the screen and then shuts itself off again. It is on for about 2 seconds.

    I know these TVS are plagued with problems. I have the television apart, there is nothing obviously wrong with either board. Anyone have a similar problem? Any idea where to start?

    P.S.

    New to the forum, thanks for all of the helpful information so far.
    Tags: None
    • bigpapabooga
      New Member
      • Apr 2013
      • 5
      • United States
      #2
      Re: VIZIO E420VO on then shuts off.

      i had a similar problem with a vx32l, turned out to be the inverter board common problem for vizio

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: VIZIO E420VO on then shuts off.

          There are lots of threads on the forum regarding to this model:
          https://www.badcaps.net/forum/search...archid=2700714
          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

            • Cosmo66
              Senior Member
              • Nov 2012
              • 87
              • USA
              #4
              Re: VIZIO E420VO on then shuts off.

              I have the exact same model, with the exact same problem. I haven't really had time to work on it, but when I do I will post back here with any info

                Comment

                • Cosmo66
                  Senior Member
                  • Nov 2012
                  • 87
                  • USA
                  #5
                  Re: VIZIO E420VO on then shuts off.

                  I solved the problem by replacing the eeprom chip U18 on main board.

                  I bought one from a seller on Ebay who sent the chip without flashing it first. I was not pleased. After getting a refund I found another guy who sells the chips and programs them himself.

                  If anyone knows where to get the file needed to flash these chips, I'd be very interested. I'm sure this won't be the last time I run into this issue

                    Comment

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