VW46LFHDTV10A - Half of Screen Dark and Distorted

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  • stevekasian
    Old N00b
    • Dec 2010
    • 182
    • USA - West Side!
    #1

    VW46LFHDTV10A - Half of Screen Dark and Distorted

    Hi guys and gals. Long time no post!

    I am looking at a Vizio VW46LFHDTV10A TV for sale with the following problem... I've seen it before, and I know it is a common problem with a known cause, I just don't recall what the cause is and can't seem to find it in the forum here!

    Below is a picture of the screen and what it's doing. Would y'all be so kind as to reply with the common cause of this if you know? If I purchase it, I'll post my repair progress here.

    Thanks!
    Steve Kasian
    Attached Files
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

      Bad tab bonds (bad LCD panel) with a 90% chance of being fixable.
      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

        • stevekasian
          Old N00b
          • Dec 2010
          • 182
          • USA - West Side!
          #3
          Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

          Thank you Tom66!

          How difficult of a fix is this? I've repaired every board on LCD and Plasma monitors & TVs except the screen and backlighting. Is it something I'm going to need a cleanroom for or anything crazy like that?

          Also, how much $ would YOU offer for a TV with this problem?

          Thanks,
          SK

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

              Originally posted by stevekasian
              Thank you Tom66!

              How difficult of a fix is this? I've repaired every board on LCD and Plasma monitors & TVs except the screen and backlighting. Is it something I'm going to need a cleanroom for or anything crazy like that?

              Also, how much $ would YOU offer for a TV with this problem?

              Thanks,
              SK
              I'd offer at most $40 because you could probably break even on selling the parts then.

              The fix is tricky, it involves disassembling the TV completely to get to the LCD panel. (I've done this before to fix a mura/clouding issue.) Then you have to get to the tab bonds on the top of the screen and find which one causes the problem by applying light pressure to them until the picture gets better. Find a way to apply this pressure permanently - people have used rubber bumpers, plastic spacers etc. with success.
              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

                • stevekasian
                  Old N00b
                  • Dec 2010
                  • 182
                  • USA - West Side!
                  #5
                  Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

                  Thanks so much! Mucho appreciado!

                  I think I'm gonna pass on this one. Sounds like a lot of work. Couple that with the fact that they're asking $200 for the thing because they think "it's an easy fix", which will make price negotiation a whole load of fun. ;-)

                  SK

                    Comment

                    • tibimakai
                      Badcaps Legend
                      • Jan 2012
                      • 3680
                      • USA
                      #6
                      Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

                      Recently I had one of these and I couldn't fix it(and a Samsung too 46A550), now I have parts for sale from this(these) TV(s).

                        Comment

                        • LookItsMikeO
                          I'm Dumb.
                          • Jan 2014
                          • 2
                          • USA
                          #7
                          Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

                          Any update on this? I got this Vizio for free from an old job and that keeps happening. It's a 46 inch and our other TV is a 32 inch, 200 dollar special that my wife thought was a great deal. Don't have the cash to buy something comparable and I'm tech dumb so, help?

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

                              See here, different symptom same cause
                              http://www.youtube.com/watch?v=purk_SyiT44
                              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

                                • LookItsMikeO
                                  I'm Dumb.
                                  • Jan 2014
                                  • 2
                                  • USA
                                  #9
                                  Re: VW46LFHDTV10A - Half of Screen Dark and Distorted

                                  Interesting. It was a free TV so what do I have to lose eh?

                                    Comment

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