L26ta6a wharfedale lines on screen on warm up fixed

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  • shepp
    Badcaps Veteran
    • Mar 2012
    • 377
    • England
    #1

    L26ta6a wharfedale lines on screen on warm up fixed

    tv was taking about 10-15mins for the picture to appear there were just lines going horizontally across the screen, thought it was a bad solder joint or tcon cable, so ordered new cable...no differance, ordered tcon and fitted no differance, sent tcon back and swopped for a main board.....still no change! but there was some dodgy noises coming from 105J cap on PSU so decided to swop it and see if that sorted it, and low and behold....BINGO!

    MORAL OF THE STORY.......IF THERES NOISES COMING FROM A COMPONENT THAT SHOULDN'T MAKE NOISES SWOP IT FIRST THEN RETEST BEFORE ORDERING BOARDS ON A WHIM


    SORRY NO PICS BUT THERES ONLY ONE 105J RED CAP ON THE POWER SUPPLY AND ITS ON THE LEFT HAND SIDE OF THE BOARD

    HOPE THIS HELPS SOMEONE IN THE FUTURE
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: L26ta6a wharfedale lines on screen on warm up fixed

      Surely this would have caused low supply voltages, causing the issue?
      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

        • shepp
          Badcaps Veteran
          • Mar 2012
          • 377
          • England
          #3
          Re: L26ta6a wharfedale lines on screen on warm up fixed

          Well last night I got a call saying it's doing it again now, so maybe it wasn't that, I will be getting the tv back Thursday to investigate the problem, must be the power board cold joint maybe

            Comment

            • shepp
              Badcaps Veteran
              • Mar 2012
              • 377
              • England
              #4
              Re: L26ta6a wharfedale lines on screen on warm up fixed

              Originally posted by shepp
              tv was taking about 10-15mins for the picture to appear there were just lines going horizontally across the screen, thought it was a bad solder joint or tcon cable, so ordered new cable...no differance, ordered tcon and fitted no differance, sent tcon back and swopped for a main board.....still no change! but there was some dodgy noises coming from 105J cap on PSU so decided to swop it and see if that sorted it, and low and behold....BINGO!

              MORAL OF THE STORY.......IF THERES NOISES COMING FROM A COMPONENT THAT SHOULDN'T MAKE NOISES SWOP IT FIRST THEN RETEST BEFORE ORDERING BOARDS ON A WHIM


              SORRY NO PICS BUT THERES ONLY ONE 105J RED CAP ON THE POWER SUPPLY AND ITS ON THE LEFT HAND SIDE OF THE BOARD

              HOPE THIS HELPS SOMEONE IN THE FUTURE
              so much for that!! i will post some pics as well when i get the tv back

                Comment

                • shepp
                  Badcaps Veteran
                  • Mar 2012
                  • 377
                  • England
                  #5
                  Re: L26ta6a wharfedale lines on screen on warm up fixed

                  well had another look at it.....when i twist the panel it comes on, so im guessing its the tab bonds, all voltages are normal and ive changed the tcon and the cable and the main board with no differance, all ive done is padded the screen where the tabs are, so fingers crossed its cured it, ive tested it a few times cold now and the screen has come on straight away both times

                  just hope when the guy gets its back its gonna be ok

                    Comment

                    • shepp
                      Badcaps Veteran
                      • Mar 2012
                      • 377
                      • England
                      #6
                      Re: L26ta6a wharfedale lines on screen on warm up fixed

                      still no joy....just got the tv back.....ended up giving him a 32" that i fixed,

                      so back to square 1 now.... im guessing there is something going on with the PSU though, because ive tried swopping all the other boards the only 1 i havent done is the PSU



                      gonna take some pics then upload

                        Comment

                        • shepp
                          Badcaps Veteran
                          • Mar 2012
                          • 377
                          • England
                          #7
                          Re: L26ta6a wharfedale lines on screen on warm up fixed

                          piccy's

                          any ideas would be greatly appreciated

                          ive already.....swopped t-con, t-con cable and swopped main board and the fault is still there
                          Attached Files

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: L26ta6a wharfedale lines on screen on warm up fixed

                              Fault must be with panel then. If it is a Chi-Mei I have seen two similar faults on 26" LCDs.
                              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

                                • pjfrith
                                  New Member
                                  • Mar 2014
                                  • 1
                                  • United Kingdom
                                  #9
                                  Re: L26ta6a wharfedale lines on screen on warm up fixed

                                  Hi Guys, I realise it's been quite a while since the original post, but I'm hoping someone can help.

                                  I've just been given a Wharfedale L26TA6A.

                                  The person that gave it me said it has the following faults.

                                  When switching it on it takes a long time to come on.

                                  Sometimes after it's been on a while, the picture becomes (in their words) pixelated.

                                  I've just plugged it in and switched it on and, on switching it on, after a few seconds the backlight comes on but the screen remains blank (grey/black)

                                  If anyone has any clues where to look first, or if it's worth repairing I'd be grateful.

                                  Also, if anyone has the user or service manuals for it, could they send them through to me?

                                  Thanks in advance for your help.

                                  Pete

                                    Comment

                                    • shepp
                                      Badcaps Veteran
                                      • Mar 2012
                                      • 377
                                      • England
                                      #10
                                      Re: L26ta6a wharfedale lines on screen on warm up fixed

                                      Originally posted by pjfrith
                                      Hi Guys, I realise it's been quite a while since the original post, but I'm hoping someone can help.

                                      I've just been given a Wharfedale L26TA6A.

                                      The person that gave it me said it has the following faults.

                                      When switching it on it takes a long time to come on.

                                      Sometimes after it's been on a while, the picture becomes (in their words) pixelated.

                                      I've just plugged it in and switched it on and, on switching it on, after a few seconds the backlight comes on but the screen remains blank (grey/black)

                                      If anyone has any clues where to look first, or if it's worth repairing I'd be grateful.

                                      Also, if anyone has the user or service manuals for it, could they send them through to me?

                                      Thanks in advance for your help.

                                      Pete
                                      go straight in and have a look at the power board caps, sounds likely, check voltages and post some pics and report back
                                      Last edited by shepp; 03-28-2014, 03:21 PM.

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