New to forum, Vizio 321vl giving me problems!

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  • stevenh44
    New Member
    • Jan 2015
    • 8
    • United States

    #1

    New to forum, Vizio 321vl giving me problems!

    Would like to introduce myself.
    My name is Steven from Dayton, Ohio.
    Looking forward to meeting everyone and hopefully learn something!
    I'm also on a few other forums, bimmerfest and zx6r.com
    here is my issue with my current t.v.
    hoping someone out there has maybe resolved the same problem and can point me in the correct direction.
    -tv turns on fine, vizio logo shows up on screen then goes black.
    - stays on with no video but does have sound.
    -can scroll through channels and here the different sounds.
    -stays on and turns of with no problem.
    I just purchased a fluke 115 multimeter do help with this project. But I'm not entirely sure how to check the boards and where to start.
    I will attach some pictures of everything.
    any advice I would greatly appreciate it!!
    Attached Files
  • AFajitas
    Senior Member
    • Dec 2014
    • 183
    • USA

    #2
    Re: New to forum, Vizio 321vl giving me problems!

    Have you tried shining a flash light into the screen to see if you can see an image? Could be the backlight turns on long enough to see the vizio logo and then turns off.

    Comment

    • stevenh44
      New Member
      • Jan 2015
      • 8
      • United States

      #3
      Re: New to forum, Vizio 321vl giving me problems!

      Ok, just tried it. yes you can slightly see the image.
      What you thinking I should do next?!
      It's really odd I get full light with vizio logo on screen then goes off or kind of now that I can see it with the flashlight

      Comment

      • MagicSmoke
        Badcaps Veteran
        • Feb 2011
        • 275
        • USA

        #4
        Re: New to forum, Vizio 321vl giving me problems!

        These sets are known to corrupt the eeprom chip on mainboard. Do a search for vizio eeprom there are many posts about it.

        Comment

        • stevenh44
          New Member
          • Jan 2015
          • 8
          • United States

          #5
          Re: New to forum, Vizio 321vl giving me problems!

          Is there a way to test this eeprom chip ?
          Are what I described, the symptoms caused by these being bad?
          thanks for your help!

          Comment

          • MagicSmoke
            Badcaps Veteran
            • Feb 2011
            • 275
            • USA

            #6
            Re: New to forum, Vizio 321vl giving me problems!

            No way I know of to test the chip itself...... But I just reread your post about seeing an image.

            What P/N is your PSU?

            You can try while set is powered on to jumper from 5.2VSB to BL-on or Lamp pin on PSU to see if backlight will come on and stay on.

            I still think the eeprom can cause the main not to send the backlight on signal to the PSU.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: New to forum, Vizio 321vl giving me problems!

              Shopjimmy sells EEPROM so as others have indicated, it can be EEPROM problem.
              http://www.shopjimmy.com/catalogsear...?q=Vizio+321vl
              BTW, there are labels for each pin of the white connector that goes to the main board, you can report DCV of each one of those pins with the name for each pin to see which signals are missing.
              Last edited by budm; 01-27-2015, 09:58 PM.
              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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