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

[Diah]

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

[bohaboha]

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 ?

[Diah]

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

[bohaboha]

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

[Diah]

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

[bohaboha]

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

[Diah]

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

2 esd

[bohaboha]

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

2 esd

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

[Diah]

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

[bohaboha]

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

with jumper and a smal tape on the left U ribcon it shows a picture on all the Screen for 3 second then loop. the esd diode never get warm in any situation with or with out a Jumper but maybe that IC near it or a capacitor are bad but no heat on them.
I am having problem to get into the Forum site from home i am answering from Bibliotek att home i get "connection not private " and not secure site ,
hope i will fix it soon.
i realy do not know what to do next maybe i ll go on with tape trying .but is ist problem with jumper and tape or i have to remouve the jumper to try the tape ?
thank you very much for your help