NOthing, i'm unable to do anything, too much science, i did not find info on these encryptions... the file you posted is still encrypted, the deryption was wrong..
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Samsung ue55tu7170u not turn on and no standby led main bn9650990e
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Where did you get this knowledge?
The dump posted in post 30 has been corrected, it's not the issue, if you have any doubts, here's a working dump, you can try it for diagnostics.Attached FilesPremium supporters get full download access and other benefits.
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don't bother with his knowerror LOL., any threat he put his ass in i leave it.
3 in 1 Boards from Sami suffer over heated it toasted the sandwich boards ( look on his downside photo at first page ).. always the issue at Hot area... no one till now succeed with it. because no diagram , if we do have then we can follow the rail and bridge it when it toasted at sandwich plateLast edited by Diah; 04-02-2025, 04:25 PM.Comment
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thanks david for your time, yes i download the software you said me and i checked but i could not finsh nothing that match on the original so aslo i understand it will not working thanks for your timeComment
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i think we can say the board is death...we tried and i thanks all of you, i tried also far from my skills....my friend ssaid me it does not turn on, so i tought i could fix it, she never said the tv will turn on one sec the standby led and bliking the red led when press the remote.....if she said me the true i ll say her it was over my skill. i really thanks all the people who help me you are really a great comunity.
the problem is find this board...i found a tv with broken screen but it s 55tu7172, and the seller dont want open it for show me the board, do you know if it has a chance to work with mine? mine is ue55tu7170 and in the label there is version no.: 01 utu7000/utu7000k u55tk3. the one i find it s a ue55tu7172 and in the label have sersion no: 2. do you think the main is compatible? thanksComment
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thanks Iotas, yes if the owner of the other tv didnt show me the main i dont buy it i will wait until someone put it on ebay, thanks IotasComment
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OK take in mind that when i post from work i'm in hurry, i don't remind well all english words, i had to say "i'm convincted" the dump is broken, this because i seen many times broken st.by memories and them looked like that with empty blocks in first kbytes..Comment
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i seen lotas dump is not 100% matching yours but is very similar, i'm gone a little deep in rsa/aes decryption and i found the info file attached to the sam. website firmware is providing only the private key but not the encrypted password, so i cannot decode the file, the pw is maybe within the tv previous firmware..Comment
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hi davi, i didnt put the firmware that iotas give me here in the ic, because i didnt want made a mess so i stopped....if i find a new board and i trow this, i ll try, so im looking for a motherboard but it s always different model so i just need to be patienti seen lotas dump is not 100% matching yours but is very similar, i'm gone a little deep in rsa/aes decryption and i found the info file attached to the sam. website firmware is providing only the private key but not the encrypted password, so i cannot decode the file, the pw is maybe within the tv previous firmware..Comment
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Hello! Samsung UE50TU7172 , BN9651900A NO STBY , corrupt dump 25q40?Thanks you for ....Attached FilesPremium supporters get full download access and other benefits.
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by dwalke15Hi,
TV was working fine, then refused to turn on. Flashing red standby LED, no backlight. If I disconnect just the main board the backlight works fine.
I had a similar spare board from another TV (wrong rating for the backlight, but fine for main board test). Main board is fine and TV works fine with the spare PSU.
The failing PSU is BN44-00876D. Struggled to get the exact schematic, but got something close.
So, with no load applied, PSU delivers 9 volts standby. If I ground the standby input control (to enable the full 12v outout), then the... -
by mrautom8Schematics for the main board needed please. Sticker on board states BN94-07517A but the silkscreen says BN41-02157B. Cant find here or anywhere on the web.
Backlights work when main boards disconnected. When connected and power button switched, the relay on the PSU board turns on for one second then back off.
While relay is on, all voltage rails are present and steady (scoped) on main board.
I love a good logic puzzle but getting lost without any schematics.
No shorts on ANY capacitor main board.
Thermal camera shows 3.3V inductor getting warm instantly but...-
Channel: Schematics and Boardviews
10-19-2025, 06:32 PM -
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This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
by JackchingI know for sure it has a bad cap and one cold solder joint. Just wondering before i order the Caps if anyone has any experience with this model? Just making sure there isnt a common component that goes bad besides the caps....
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