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Samsung UE70TU6905 BACKLIGHTS AND SOUND ON NO PICTURES BUT SCREEN NOT DARK

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    also put back the cable ANA_DIM in the socket.,
    the feed back points are marked by lotas post#77

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      Originally posted by Diah View Post
      also put back the cable ANA_DIM in the socket.,
      the feed back points are marked by lotas post#77
      I made the test with jumper on those point market By Lotas and Pin2 unhooked . what do you think that result i get in my last post ?

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        the part of panel at yours last test which didnt show picture are shorted.... you need to show here the buffer boards of this part if there any esd diode installed on it

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          Originally posted by Diah View Post
          the part of panel at yours last test which didnt show picture are shorted.... you need to show here the buffer boards of this part if there any esd diode installed on it
          Hello new day new attempts. I have done new tests with ANA_DIM pin 2 disconnected and with jumper on feed back points.
          looking to the screen
          1) The left buffer board removed = no picture backlight on the TV goes in start loop and STB flash 3 times 3 flash.
          2)the middle and the left buffer board connected start with the logo for two to 3 seconds, then no picture but backlight on, then goes in the start loop with STB flash 3 times 3 flash.
          3)only middle buffer board attached = see attached picture no loop and no STB flash .
          Diah here some pictures of the buffer board as you asked
          pictures order from left to right 135133,135122,13508,134759,134708,134551 and 134502
          Attached Files

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            we said put back ANA_DIM. and connect the left and middle side only.. see if there loop or not

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              Originally posted by Diah View Post
              we said put back ANA_DIM. and connect the left and middle side only.. see if there loop or not
              ok sorry and with or without the jumper on feed back points? did you find that esd Diode on buffert board
              Last edited by bohaboha; Yesterday, 11:50 AM.

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                all work now with jumper.. later after the issue cleared u can remove it

                2 esd

                Click image for larger version

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                  Originally posted by Diah View Post
                  all work now with jumper.. later after the issue cleared u can remove it

                  2 esd

                  Click image for larger version

Name:	20250430_134759.jpg
Views:	0
Size:	129.2 KB
ID:	3626784

                  with ANA_DIM pin in place and the jumper and the left and middle side connected the TVn shows the logo then start loop

                  Comment


                    Originally posted by bohaboha View Post


                    with ANA_DIM pin in place and the jumper and the left and middle side connected the TVn shows the logo then start loop
                    remove the jumper and do same test.. see if the screen show ... keep it in loop so you can check the esd diode if one of them got warm

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