Sylvania 42" Plasma TV

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  • aliasdck
    Senior Member
    • Sep 2009
    • 100
    #1

    Sylvania 42" Plasma TV

    Samsung Panel: S42SD-YD05

    Friend asked me to take a look at his 42" Plasma that had a couple of thin vertical lines on it.

    Attached is a picture of the display. I just wanted to get a professional opinion before I dive into this one - I am curious if this is likely panel failure or something fixable.
    Attached Files
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    • PlainBill
      Badcaps Legend
      • Feb 2009
      • 7034
      • USA
      #2
      Re: Sylvania 42" Plasma TV

      Originally posted by aliasdck
      Samsung Panel: S42SD-YD05

      Friend asked me to take a look at his 42" Plasma that had a couple of thin vertical lines on it.

      Attached is a picture of the display. I just wanted to get a professional opinion before I dive into this one - I am curious if this is likely panel failure or something fixable.
      My thoughts are it's either an X-driver or the control board. But that is REALLY only a guess. Wizard is the expert. The service manual for the panel is here:

      Registration is required, but free.

      PlainBill

      PS: The site is in Polish.

      pb
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

        Comment

        • Wizard
          Badcaps Legend
          • Mar 2008
          • 2296
          #3
          Re: Sylvania 42" Plasma TV

          Panel is junk. The thin vertical lines is terminal.

          Reason is: the vertical lines is driven by the Z drivers (at bottom or both top and bottom depending on panels) and these chips is bonded to the panel itself. Same thing with vertical band as well.

          If the lines or bands across, it is fixable by changing Y or the X driver (the board on left, most of time or right side)

          Cheers, Wizard

            Comment

            • aliasdck
              Senior Member
              • Sep 2009
              • 100
              #4
              Re: Sylvania 42" Plasma TV

              Figured it was either a bad panel or a bad z driver or control board problem as plainbill was thinking.

              As usual, the expertise of wizard, plainbill and the like is a blessing here. Your guys advice throughout this forum is greatly appreciated.

              Thanks.

                Comment

                • cadiman
                  Badcaps Veteran
                  • Mar 2010
                  • 397
                  #5
                  Re: Sylvania 42" Plasma TV

                  Who makes the pdp? Didn`t some of these drivers have solder problems for verticle line issues?

                    Comment

                    • Wizard
                      Badcaps Legend
                      • Mar 2008
                      • 2296
                      #6
                      Re: Sylvania 42" Plasma TV

                      No solder joints on Z-driver ICs. They are bonded to the panel itself.

                      Cheers, Wizard

                        Comment

                        • Krankshaft
                          Badcaps Legend
                          • Jan 2007
                          • 2328
                          • USA
                          #7
                          Re: Sylvania 42" Plasma TV

                          Just to be clear by bonded you mean the die itself is soldered to the board and encased in that black epoxy blob we're so used to seeing right?
                          Elements of the past and the future combining to make something not quite as good as either.

                            Comment

                            • karusoo
                              New Member
                              • Feb 2014
                              • 1
                              • Estonia
                              #8
                              Re: Sylvania 42" Plasma TV

                              Hello I Have a Philips with panel s42sd-yd05 with Y board lj92-02016a.
                              I saved it from going garbage about 2008 and replaced y board fets 5014 and 5015.
                              It worked fine since to the end of the 2013. It had a flickering picture problem.
                              Now I got disassembled: Power supply work fine checked the coltage the caps and looked ac rattle with scope on dc lines. All of mentioned are correct. Checked the Y board for caps or bad diodes of transistors, did not found any shorted.
                              Whed I ran the panel with the dip switches in internal mode...the full white screen:
                              The panel is like strobo...
                              Is it the some IC from Y board?

                              Best
                              Alari

                                Comment

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