Vizio gv42l No sound No picture

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  • jc70nova
    New Member
    • Feb 2016
    • 7
    • usa
    #1

    Vizio gv42l No sound No picture

    I have a vizio gv42l fhdtv10a I have no picture or sound. I checked the back light and its not working nor can I see any display with the flash light test.

    The vizio front emblem light turns on but that's it.. When you can turn the tv on you can hear it click and power up but that's it, also you have to unplug it to turn it off want respond to the power button or remote.

    I did some reading and its pointing me to the back light inverter board, but the problem with that is everyone I see that had issues with that board had sound.
    so should I replace the main board?
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Vizio gv42l No sound No picture

      Pictures of the boards?
      Fuses on the main boards are OK?
      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

        • jc70nova
          New Member
          • Feb 2016
          • 7
          • usa
          #3
          Re: Vizio gv42l No sound No picture

          I don't have the equipment to check if the fuses are good or not. I trying to get feedback to see what board I need to replace

            Comment

            • ljintexas
              LJinTexas
              • Jan 2015
              • 669
              • USA
              #4
              Re: Vizio gv42l No sound No picture

              Good clear pictures of the rear of the tv showing all of the boards is a good start.

                Comment

                • jc70nova
                  New Member
                  • Feb 2016
                  • 7
                  • usa
                  #5
                  Re: Vizio gv42l No sound No picture

                  ok I hope these will work I can get what ever pics are needed.
                  Attached Files

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA
                      #6
                      Re: Vizio gv42l No sound No picture

                      You will at least need to have Digital meter to do simple resistance and Voltage testing otherwise you will be doing lots of board swapping.
                      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

                        • jc70nova
                          New Member
                          • Feb 2016
                          • 7
                          • usa
                          #7
                          Re: Vizio gv42l No sound No picture

                          Originally posted by budm
                          You will at least need to have Digital meter to do simple resistance and Voltage testing otherwise you will be doing lots of board swapping.
                          ok that's understandable, I was thinking on getting one. IS there a certain one I need to get or just a standard cheap one.
                          also once I get one would you be able to walk me threw this

                            Comment

                            • Agent24
                              I see dead caps
                              • Oct 2007
                              • 4970
                              • New Zealand
                              #8
                              Re: Vizio gv42l No sound No picture

                              Originally posted by jc70nova
                              ok that's understandable, I was thinking on getting one. IS there a certain one I need to get or just a standard cheap one.
                              also once I get one would you be able to walk me threw this
                              A good quality one is recommended, but if this is a one-off you might as well just get a cheapie. $15-$20 US would be the lowest I'd go. Anything cheaper is probably total garbage and a safety concern.

                              You may well find a better (but older) meter on eBay for a low price too.

                              As long as it has AC Volts, DC Volts, DC Amps, Resistance, and a Continuity\Diode test mode, it would be suitable. Other extra measurements like AC Amps, Capacitance, are useful but not needed and are not usually found in cheap meters anyway.
                              "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                              -David VanHorn

                                Comment

                                • jc70nova
                                  New Member
                                  • Feb 2016
                                  • 7
                                  • usa
                                  #9
                                  Re: Vizio gv42l No sound No picture

                                  Originally posted by Agent24
                                  A good quality one is recommended, but if this is a one-off you might as well just get a cheapie. $15-$20 US would be the lowest I'd go. Anything cheaper is probably total garbage and a safety concern.

                                  You may well find a better (but older) meter on eBay for a low price too.

                                  As long as it has AC Volts, DC Volts, DC Amps, Resistance, and a Continuity\Diode test mode, it would be suitable. Other extra measurements like AC Amps, Capacitance, are useful but not needed and are not usually found in cheap meters anyway.
                                  ok so I ran up to lowes and just grabbed one got it for
                                  28.00

                                    Comment

                                    • jc70nova
                                      New Member
                                      • Feb 2016
                                      • 7
                                      • usa
                                      #10
                                      Re: Vizio gv42l No sound No picture

                                      Originally posted by budm
                                      You will at least need to have Digital meter to do simple resistance and Voltage testing otherwise you will be doing lots of board swapping.
                                      ok my friend I went out and got one so could you please give me some help on whats next thanks

                                        Comment

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