samsung qe55q7fam no picture

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  • CroBUTKO91
    Member
    • Jul 2022
    • 22
    • Croatia

    #1

    samsung qe55q7fam no picture

    hy i got qled qe55q7fam the previous owner said the picture was jumping so he tried fixes and destroyed the mainboard )ripped off cpu) i ordered a new mainboard all the data from old board are same as the new one serial numb model etc only what is diferent is screen type mine is y-qm055flav2h and the new board original screen was CY-QM055FLLV2H i tested all the voltges on powerboard all cheks ok so when i plug tv kinda turns on i got only backlight its responsive to controler but no picture and the standby light is solid red any good advice its the screen type problem and can it be changed somehow, thank you
  • CroBUTKO91
    Member
    • Jul 2022
    • 22
    • Croatia

    #2
    Re: samsung qe55q7fam no picture

    forgot to mention tried left and right ribbons off and on just one side conected nothing changes

    Comment

    • Davi.p
      Hobbist
      • Sep 2009
      • 4261
      • Italy - Milan

      #3
      Re: samsung qe55q7fam no picture

      You've got 2 problems, bad ma.bo. settings programming, and bad gate driver on panel, first try to swap 24c eeprom from old to new board, then turn on and keep exit key pressed for about 15 sec, then turn off then on and pray for the image to be visible, next step coming soon..
      Last edited by Davi.p; 08-29-2022, 06:09 PM.

      Comment

      • CroBUTKO91
        Member
        • Jul 2022
        • 22
        • Croatia

        #4
        Re: samsung qe55q7fam no picture

        hy im sorry for late reply iwebeen moving and didnt have a working space for repair tv now i have tried swap bios chip and hold exit button but still no picture any other help

        Comment

        • Davi.p
          Hobbist
          • Sep 2009
          • 4261
          • Italy - Milan

          #5
          Re: samsung qe55q7fam no picture

          i the eprom swap was a good move the panel may be in protection state, must try the masking method, post tcon photos, no flash and shadows..

          Comment

          • CroBUTKO91
            Member
            • Jul 2022
            • 22
            • Croatia

            #6
            Re: samsung qe55q7fam no picture

            hi thank you for fast response will this be ok
            Attached Files

            Comment

            • CroBUTKO91
              Member
              • Jul 2022
              • 22
              • Croatia

              #7
              Re: samsung qe55q7fam no picture

              just an update i found a matching mainboard for 60e bought it and now it works im really thankfull for you help

              Comment

              • nomoresonys
                Badcaps Legend
                • Jan 2013
                • 12075
                • U.S.

                #8
                Re: samsung qe55q7fam no picture

                ok, then to sum up, jumping picture, tried wrong mainboard, no joy, got the right mainboard, tv fixed.

                Comment

                • CroBUTKO91
                  Member
                  • Jul 2022
                  • 22
                  • Croatia

                  #9
                  Re: samsung qe55q7fam no picture

                  jumping picture has been resolved with new mainboard and new flat cables

                  Comment

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