Vizio E65-F0 Backlight On, No Picture

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  • Storyteller12
    Badcaps Veteran
    • Jun 2020
    • 624
    • USA
    #1

    Vizio E65-F0 Backlight On, No Picture

    Have this TV with no picture. When I first got it the same symptom. Backlight on but no picture. I check the tcon fuse and it was bad. So I ordered new tcon and mainboard packaged together.

    I replaced the tcon and mainboard and still have the same symptom but the fuse on the tcon did not blow.

    I tried unplugging one side at a time of the lvds cables and still get no picture. Not even half white screen. Just black screen with backlights on.

    Anyone have any suggestions or run into this problem on this model?
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    • Storyteller12
      Badcaps Veteran
      • Jun 2020
      • 624
      • USA
      #2
      Re: Vizio E65-F0 Backlight On, No Picture

      Power supply
      Attached Files

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        • Storyteller12
          Badcaps Veteran
          • Jun 2020
          • 624
          • USA
          #3
          Re: Vizio E65-F0 Backlight On, No Picture

          Main board
          Attached Files

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            • Storyteller12
              Badcaps Veteran
              • Jun 2020
              • 624
              • USA
              #4
              Re: Vizio E65-F0 Backlight On, No Picture

              Tcon
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                • Storyteller12
                  Badcaps Veteran
                  • Jun 2020
                  • 624
                  • USA
                  #5
                  Re: Vizio E65-F0 Backlight On, No Picture

                  Also I found this eeprom chip on the panel buffer board. Never seen this before. Maybe it's bad/ corrupt?
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                    • dskall
                      Badcaps Legend
                      • Oct 2016
                      • 2905
                      • usa
                      #6
                      Re: Vizio E65-F0 Backlight On, No Picture

                      I would be checking t-con voltages. Maybe panel dragging down a voltage.
                      I assume no responsibility for any stupid suggestions I might post.

                        Comment

                        • Storyteller12
                          Badcaps Veteran
                          • Jun 2020
                          • 624
                          • USA
                          #7
                          Re: Vizio E65-F0 Backlight On, No Picture

                          Did some more digging around and found a few shorted caps I believe.

                          It's a group of them coming off that eeprom I mentioned on the buffer boards.

                          I removed 1 fro circuit and it was shorted. However the group of caps still all test short also.

                          Not sure how to find which one is bad or if it's the eeprom except for removing each 1 by 1.
                          Attached Files

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                            • diif
                              Badcaps Legend
                              • Feb 2014
                              • 6978
                              • England
                              #8
                              Re: Vizio E65-F0 Backlight On, No Picture

                              Your photo is blurry but they look black not cap colour suggesting they are inductors and so will read as short.

                                Comment

                                • Storyteller12
                                  Badcaps Veteran
                                  • Jun 2020
                                  • 624
                                  • USA
                                  #9
                                  Re: Vizio E65-F0 Backlight On, No Picture

                                  Originally posted by diif
                                  Your photo is blurry but they look black not cap colour suggesting they are inductors and so will read as short.
                                  I think you are correct. It's getting harder to see these small things. Guess I'm getting old.

                                    Comment

                                    • captainKKK
                                      Badcaps Veteran
                                      • Sep 2018
                                      • 287
                                      • United States
                                      #10
                                      Re: Vizio E65-F0 Backlight On, No Picture

                                      Have you checked the PS board? What are its voltages?
                                      Where did you get the mainboard and tcon?
                                      Have you had time to check t-con voltages?
                                      Last edited by captainKKK; 03-08-2022, 04:22 PM.

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