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

[bohaboha]

no one to give an direction? very sorry but i really need your help

[bohaboha]

any advices or suggestions

[bohaboha]

go back any try my posts #53 and 56

Hi i did the test as in post 53 and 56 and i se the TV is trying to show a picture but no nothing in the end i did also shorting trdy1&3 test points but the tv does not show which part is defect . it seems like i am about to find it but no. today i got the new DC to DC VPMS chips and i am thinking to try it but first i desoldered the old one and put in place the tin bolls without stencil but i did not solder them yet before i get some advice about it i ll try with the old one first

[bohaboha]

go back any try my posts #53 and 56

ok i ll do thank you

[Diah]

go back any try my posts #53 and 56

[bohaboha]

Hi the Mainboard is from a different Region what is possible to do to make it compatible to my Region ? do there is some process to follow or there is no way to fix it? please if you can tell me

[bohaboha]

Hello again now I have received the probably compatible Mainboard BN41-02751B from a TV:UE70TU7100KXXU As I hope it will be compatible for my set but yes all the time there is one but the Mainboard comes from Albania and it might be a Regions issue some reprogramming is there any of you guys who know I am very grateful for all answers and suggestions

[bohaboha]

i know how much you would like to help yours friends , but this will not help if the panel defect

it's my neighbor it's for the kids' sake .hope it's not the screen otherwise last try

[Diah]

thank you Diah i found a Mainboard for 70 inches with LVDS and STBY connection for a very fear price hope it will be ok

i know how much you would like to help yours friends , but this will not help if the panel defect

[bohaboha]

Volts had nothings to do if one SoC defect or BGA.issue

thank you Diah i found a Mainboard for 70 inches with LVDS and STBY connection for a very fear price hope it will be ok

[Diah]

Hi no one knows about it?

Volts had nothings to do if one SoC defect or BGA.issue

[bohaboha]

Hi no one knows about it?

[bohaboha]

Hi wondering if someone can tell me what Volt value is missing on the Mainboard for this to work, see the picture
thanks

[bohaboha]

Hi since this replacement mainboard is not compatible with this TV I think I'll try to transfer the parts to the original mainboard

[bohaboha]

i just wounder from long time you are testing ,, if the lvds cable contact pins didn't broken.. lol

you think really it can be i ll check it .i will just test the voltage on the 70 inches PS just to know what value those small volt should be to elimite my doubt about it.

[Diah]

i just wounder from long time you are testing ,, if the lvds cable contact pins didn't broken.. lol

[bohaboha]

you are diving at wrong Ocean, .. ANA_DIMM absolute normal,, and yours PSU BL ok too..
i just test for you 55KU MB with PSU with out BL and screen.. ANA_DIMM pins No 2 was reading 1.65V before the MB go to loop because no BL.

this is creasy no more loop now without the jumper but still no picture and no response from RC. maybe have to look for the programming side.

i have an other idea : i have the power supply for that 65 inches if i swap both Mainboard and Power Supply and give it a try hopefully i have the STB contact you know i sell TV parts on E-Bay so i have some parts i use to take all the parts from the set i find.
i hope it does not hurt the screen what do you suggest for this

[Diah]

you are diving at wrong Ocean, .. ANA_DIMM absolute normal,, and yours PSU BL ok too..
i just test for you 55KU MB with PSU with out BL and screen.. ANA_DIMM pins No 2 was reading 1.65V before the MB go to loop because no BL.

[bohaboha]

from start before you missed with 70MB, you have the issue on Panel,
70, and the one you said 65 they have only T-C Tuner, the 58 have T-C-S Tuner, i i did wrote before its had different at function, could be the wiring of IR socket different too this why no RC function.
you can try 65 with out jumpers bur disconnect the left and right U ribbon., to avoid Panel short effected the MB

Hi first I want to thank everyone so much for the help I have received and am getting from the wonderful and patient Members of this forum and especially you Diah .I can surely try with 65 inches but I don't expect much from this try. Diah I think the problem lies in the fact that the Mainboard doesn't get the right current strength from the power supply when it comes to I think 5V because there is this 2.5V ANA_DIM which is a bit strange or what do you think?
I think I have to find the right values for them to be sure, maybe someone here who has the same board that can enlighten us about it

[Diah]

from start before you missed with 70MB, you have the issue on Panel,
70, and the one you said 65 they have only T-C Tuner, the 58 have T-C-S Tuner, i i did wrote before its had different at function, could be the wiring of IR socket different too this why no RC function.
you can try 65 with out jumpers bur disconnect the left and right U ribbon., to avoid Panel short effected the MB