Vizio E241i-A1 woes.

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  • Logistics
    Badcaps Veteran
    • Apr 2007
    • 721
    • USA

    #1

    Vizio E241i-A1 woes.

    My sister-in-law has had this TV for years. She says that after about 6-months the TV began shutting itself off at random. Until a week or two, ago when it would no longer power on. Pressing the power button causes the power light to come up for a few moments, but then the TV shuts back off. As it became gradually worse and worse, I'm hoping that it's as simple as replacing the caps. I've already ordered the capacitors, but I wanted to give you guys a look at the board in case there is anything you suggest I change. I will re-wet the solder joints, and I would like to re-position the large diodes so that they are as far apart from each other as possible.
    Attached Files
    Presonus Audiobox USB, Schiit Magni 3, Sony MDR-V700
  • dskall
    Badcaps Legend
    • Oct 2016
    • 2905
    • usa

    #2
    Re: Vizio E241i-A1 woes.

    When you push power button what dcv do you get across terminals of your main cap? Upper right first pic.
    I assume no responsibility for any stupid suggestions I might post.

    Comment

    • Logistics
      Badcaps Veteran
      • Apr 2007
      • 721
      • USA

      #3
      Re: Vizio E241i-A1 woes.

      I'll get back to you on that as soon as possible.

      That reminds me, do any of you feel I should populate the empty spaces for electrolytics? I noticed it has space for a second primary cap, and one other 'lytic.
      Presonus Audiobox USB, Schiit Magni 3, Sony MDR-V700

      Comment

      • dick_barton
        Badcaps Legend
        • Aug 2015
        • 6642
        • Wales

        #4
        Re: Vizio E241i-A1 woes.

        Those empty spaces could be populated when the power supply is used for a different set. Leave unpopulated.
        Willing to help but I'm no expert.

        Comment

        • Logistics
          Badcaps Veteran
          • Apr 2007
          • 721
          • USA

          #5
          Re: Vizio E241i-A1 woes.

          My caps from Digi-Key have arrived.

          Will it put some sort of unnecessary strain on portions of the circuits to add extra filtering capacitors?

          For instance, C8113 near the bottom of the image is tied to the exact same traces as C8102. Both positives share the same trace as well as the ground trace. And obviously, the location for the second primary cap is tied to the same points as the first.

          Would it be bad to add these? On motherboards, people have always suggested populating empty areas.
          Presonus Audiobox USB, Schiit Magni 3, Sony MDR-V700

          Comment

          • dskall
            Badcaps Legend
            • Oct 2016
            • 2905
            • usa

            #6
            Re: Vizio E241i-A1 woes.

            I agree with post 4
            I assume no responsibility for any stupid suggestions I might post.

            Comment

            • Logistics
              Badcaps Veteran
              • Apr 2007
              • 721
              • USA

              #7
              Re: Vizio E241i-A1 woes.

              Well, it still behaves the same after a recap. Time to bust out my meter, and test stuff out. I'll start with the previous suggestion, checking the voltage at the primary cap during turn-on.

              Any other suggestions are quite welcome.
              Presonus Audiobox USB, Schiit Magni 3, Sony MDR-V700

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Vizio E241i-A1 woes.

                So did you also replace the cap in the primary side C9103?
                Since the power supply is an always on power supply, so you need to find out if ALL the output DC Voltages drop out or not when TV acts up.
                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

                • Logistics
                  Badcaps Veteran
                  • Apr 2007
                  • 721
                  • USA

                  #9
                  Re: Vizio E241i-A1 woes.

                  I replaced C9101, the large primary cap, but not those little blue caps.
                  Presonus Audiobox USB, Schiit Magni 3, Sony MDR-V700

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #10
                    Re: Vizio E241i-A1 woes.

                    Originally posted by Logistics
                    I replaced C9101, the large primary cap, but not those little blue caps.
                    C9103 is small brown lytics cap right next to D9105.
                    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

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