Toshiba 32AV502RZ LCD flickering/double image

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  • Dogbutch
    New Member
    • Feb 2014
    • 8
    • Canada
    #1

    Toshiba 32AV502RZ LCD flickering/double image

    I am playing with a Toshiba 32AV502RZ that has a flickering LCD. all inputs including menu. kind of a double image look to it.

    the previous owner ripped the coaxial input off of the main board. There does not seem to be any physical dammage to the board and I have removed the RF input case from the main board. I plan on using HDMI input anyway

    as I am typing this. it stopped doing the flicker...

    here's a video. http://youtu.be/nNSug8g5Q2s


    I will follow up with more info

    Phil
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Toshiba 32AV502RZ LCD flickering/double image

      Bad panel - tab bonds. May or may not be 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

        • Dogbutch
          New Member
          • Feb 2014
          • 8
          • Canada
          #3
          Re: Toshiba 32AV502RZ LCD flickering/double image

          powered off and on and problem came back.

            Comment

            • Dogbutch
              New Member
              • Feb 2014
              • 8
              • Canada
              #4
              Re: Toshiba 32AV502RZ LCD flickering/double image

              left on for 4 hours and it stopped the double image

                Comment

                • Dogbutch
                  New Member
                  • Feb 2014
                  • 8
                  • Canada
                  #5
                  Re: Toshiba 32AV502RZ LCD flickering/double image

                  tv ran fine for 6 hours +
                  powered off for an hour and double image flicker came back.

                    Comment

                    • Dogbutch
                      New Member
                      • Feb 2014
                      • 8
                      • Canada
                      #6
                      Re: Toshiba 32AV502RZ LCD flickering/double image

                      also noticed that the vertical spacing of the double image gets less and less as the TV warms up. after an hour there is no spacing left and tv runs normal.

                      are we still thinking bad LCD panel??

                        Comment

                        • Dogbutch
                          New Member
                          • Feb 2014
                          • 8
                          • Canada
                          #7
                          Re: Toshiba 32AV502RZ LCD flickering/double image

                          running now for 24 hours. no issues. but if I power off I will get double image for the first hour or so..

                          what could be the issue?

                          thank you

                            Comment

                            • johnboy1313
                              Badcaps Legend
                              • Nov 2012
                              • 1959
                              • USA
                              #8
                              Re: Toshiba 32AV502RZ LCD flickering/double image

                              Originally posted by Dogbutch
                              running now for 24 hours. no issues. but if I power off I will get double image for the first hour or so..

                              what could be the issue?

                              thank you
                              You've already got your answer above

                              Originally posted by tom66
                              Bad panel - tab bonds. May or may not be fixable.

                                Comment

                                • Dogbutch
                                  New Member
                                  • Feb 2014
                                  • 8
                                  • Canada
                                  #9
                                  Re: Toshiba 32AV502RZ LCD flickering/double image

                                  thank you

                                    Comment

                                    • Alastair E
                                      Chief Womble
                                      • Mar 2013
                                      • 1963
                                      • U.K.
                                      #10
                                      Re: Toshiba 32AV502RZ LCD flickering/double image

                                      Tab-Bonding is a problem on many sets....

                                      The thin Kapton film connections from the glass of the panel to the PCB along the top of the panel come adrift.

                                      Sometimes a temporary repair can be made by using double-sided foam-tape between the frame and the Kapton film where it attaches the glass and where it attaches the PCB.
                                      --Its not a proper repair, more a 'botch' but better than nothing, and all that can be done.
                                      There's no other way of fixing these issues.
                                      TELEFIX

                                      How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                                      http://www.irf.com/technical-info/appnotes/an-1088.pdf
                                      PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                                        Comment

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