Originally posted by bohaboha
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Samsung UE70TU6905 BACKLIGHTS AND SOUND ON NO PICTURES BUT SCREEN NOT DARK
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Originally posted by Diah View Post
then you have different between the 2 boards function.
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Originally posted by Diah View Postas i know TU even size MB have only one LVDS, the odd have 2.
however i would like you start the TV with out any socket of WIFI and front IR, let us testing in such condition only.. the jumpers must be in place
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Originally posted by Diah View PostMB with jumpers, connected only to power boards and screen.... no other sockets of wifi or front LED indicator IR FBLast edited by bohaboha; 05-06-2025, 07:38 AM.
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Originally posted by Diah View Postkeep it in this test mode... just disconnect half screen a time
same with the right U ribbon disconnected
but with only the middle connected without the left and right side that part is steady no more loop you can se the picture in post 104
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Originally posted by Diah View Postzoom in the photo.. you will see 2 pins are like connected together,, u need to clean them.... also remove the jumpers totally u don't need it any more.... work on the panel , masking or scrap it
and i do have a board for 65 inches that have only one LVDS to the Screen it looks identical to the 70 inches
i ll post some pictures of them all to se the differences
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Originally posted by lotas View Post
Yes, there were never any problems with them, here in the photo there are control points, check the resistance with a multimeter between them (between 1 and 2, between 1 and 3,...., between 2 and 3, between 2 and 4, and so on) and between the ground, there should not be low resistance.
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Hi again here the pictures of the 3 Mainboards they are almost identical only the 65 inches which differs with the others with socket on the upper left corner and it is active but probably they are not compatible as the 58 inches dealt with in this thread does not correspond to this Screen and neither for the remote control maybe it needs to be reprogrammed (region issue )
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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
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Originally posted by Diah View Postfrom 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
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
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Originally posted by Diah View Postyou 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.
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
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Originally posted by Diah View Posti 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.
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