Technika LED32-248 - Horizontal & Vertical Lines

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  • Wabby
    Member
    • Apr 2014
    • 30
    • UK
    #1

    Technika LED32-248 - Horizontal & Vertical Lines

    Hi Guys,

    Got an LED with the following image problem (only occurs once an input is put in the main board - until that point the image is clear from a cold start).





    I have changed the TCON and that made no difference. Are these main boards going to be component repairable, or am I best just swapping the board out?

    I assume its the main thats gone?

    Cheers
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Technika LED32-248 - Horizontal & Vertical Lines

      It's more likely to be the panel with that problem. I might have the main board for the 40" version of this if you'd like to try it, but I would be thinking panel more than anything. (Too common of an issue with modern LCD & LED-LCD TVs, cheap panels = poor reliability.)
      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

        • Wabby
          Member
          • Apr 2014
          • 30
          • UK
          #3
          Re: Technika LED32-248 - Horizontal & Vertical Lines

          I thought the screen would point to being OK if the 'No signal' part etc was perfectly fine before something was place into the main board?

          If its the screen, then this bad boy will be making its way to the landfill. lol

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Technika LED32-248 - Horizontal & Vertical Lines

              I can see the lines on the blue screen, even with "No signal"? Am I missing something...?
              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

                • Wabby
                  Member
                  • Apr 2014
                  • 30
                  • UK
                  #5
                  Re: Technika LED32-248 - Horizontal & Vertical Lines

                  Oh yeah - sorry.

                  The blue lines on the no signal screen are only present once you have put a connection to any of the inputs.

                  So if I turn the TV on from cold, it works fine and perfect until I add a source (any source) and then it behaves like this, until a cold start again with no inputs connected.

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Technika LED32-248 - Horizontal & Vertical Lines

                      Hmm, that is odd. Does it matter if the source is powered up? Have you tried applying gentle pressure to the main board to see if there's any difference?
                      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

                        • Wabby
                          Member
                          • Apr 2014
                          • 30
                          • UK
                          #7
                          Re: Technika LED32-248 - Horizontal & Vertical Lines

                          Found this TV again in the back of the middle bedroom, so took it out.

                          It works and fails sporadically. When failing, it does the following:
                          TV Video Issue

                          Working fine at the moment, with occasional flickering like the video above. Gets really bad then back to OK for a while and repeat etc.

                            Comment

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