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    #1

    VIZIO VX37L-Black screen

    Hi Folks!
    I acquired this Vizio unit from a friend who was about to toss this unit into the recycle bin. I adopted it hoping to bring it back to life with the help of this wonderful forum.
    It only shows a black screen, no sound after I push the power button.
    I hear a slight buzzing sound from the power supply.
    The main Board # is 3637-0012-0150(3C)
    Here are the LDO regulator readings (turned off and on) and a few pictures.
    Thank you!
    Attached Files
    Tags: None
    #2
    Re: VIZIO VX37L-Black screen

    Do you have a DVOM and can you list model # and some pics of power supply and any other board on TV. Is there any light on? Power light?

    Comment

      #3
      Re: VIZIO VX37L-Black screen

      I plug it in, amber light turns white and stays that way. Will take more pics tomorrow.

      Comment

        #4
        Re: VIZIO VX37L-Black screen

        Sorry didnt see you had model listed in heading..

        Comment

          #5
          Re: VIZIO VX37L-Black screen

          No problemo. Thanks!

          Comment

            #6
            Re: VIZIO VX37L-Black screen

            This video (not mine) is relevant to your problem:
            http://www.youtube.com/watch?v=cNFzBJELFoU&feature=plcp

            It is a similar problem (not exactly the same) but likely the cause of your problem.
            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

              #7
              Re: VIZIO VX37L-Black screen

              That youtube link tom66 referenced is from the how to test a voltage regulator link below in my sig file. So you get a text and video explanation of how it works.

              U5 and U8 look suspicious.
              --- begin sig file ---

              If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

              We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

              Please do not post inline and offsite as they slow down the loading of pages.

              --- end sig file ---

              Comment

                #8
                Re: VIZIO VX37L-Black screen

                Originally posted by retiredcaps View Post
                That youtube link tom66 referenced is from the how to test a voltage regulator link below in my sig file. So you get a text and video explanation of how it works.

                U5 and U8 look suspicious.
                Well, actually, I found it because I subscribe to norcal715's videos. Very interesting to see a decent TV tech - one who doesn't simply swap boards (unless he has to) - but actually does a component level repair.
                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

                  #9
                  Re: VIZIO VX37L-Black screen

                  Originally posted by tom66 View Post
                  Well, actually, I found it because I subscribe to norcal715's videos
                  Sorry, what I meant to say was it is also part of the "how to" link below. Not from.
                  --- begin sig file ---

                  If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                  We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                  Please do not post inline and offsite as they slow down the loading of pages.

                  --- end sig file ---

                  Comment

                    #10
                    Re: VIZIO VX37L-Black screen

                    Originally posted by retiredcaps View Post
                    Sorry, what I meant to say was it is also part of the "how to" link below. Not from.
                    No worries. Your guide is excellent. The video only adds to it.
                    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

                      #11
                      Re: VIZIO VX37L-Black screen

                      Originally posted by tom66 View Post
                      No worries
                      When I'm multitasking (in this case making dinner) I sometimes don't proof read. Otherwise, my juicy hamburger would be one dried up hockey puck.
                      --- begin sig file ---

                      If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                      We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                      Please do not post inline and offsite as they slow down the loading of pages.

                      --- end sig file ---

                      Comment

                        #12
                        Re: VIZIO VX37L-Black screen

                        Hello,

                        I have a Vizio VX37L with a popular problem: Vizio LCD Powers on with backlight, Wont power off, No video https://www.youtube.com/watch?v=cNFzBJELFoU ) .

                        I have followed the troubleshooting steps in this video and attached are pics of the board along with voltage measurements. I didn't see a resolution for this thread.....however, I am hoping someone can help with identifying the problem part (parts).

                        Thank you in advance!

                        Lee
                        Attached Files

                        Comment

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