Samsung ue55tu7170u not turn on and no standby led main bn9650990e

[lotas]

If you have a completely clean dump, then most likely there is poor contact in the socket with the chip, dirty pins on the chip from flux, the power supply on the programmer is set to 3.3v, using a jumper, the chip is inserted correctly, not turned 180 degrees?

[PNI E.]

If you have a completely clean dump, then most likely there is poor contact in the socket with the chip, dirty pins on the chip from flux, the power supply on the programmer is set to 3.3v, using a jumper, the chip is inserted correctly, not turned 180 degrees?

no...there is an arrow that show the first pin....i try to desolder again and solder back

[PNI E.]

If you have a completely clean dump, then most likely there is poor contact in the socket with the chip, dirty pins on the chip from flux, the power supply on the programmer is set to 3.3v, using a jumper, the chip is inserted correctly, not turned 180 degrees?

Iotas u were right maybe i wrong something but i desolder the ic again clean with alchool and after different try i finally have a dump, not all blank i post it here. so the problem should be somewhere else...or the dump is not working....

[Davi.p]

Sorry i read the post only now, i would have suggested after your first post my bet is on the standby eprom, remove the heatsink, somewhere there have to be as usual an spi eprom containing the standby.software, must be rewritten (sop8 ic)

[PNI E.]

Sorry i read the post only now, i would have suggested after your first post my bet is on the standby eprom, remove the heatsink, somewhere there have to be as usual an spi eprom containing the standby.software, must be rewritten (sop8 ic)

Hi, thanks for your help you don't need to be sorry, i thanks all you help me and I ll be happy if we fix this tv, the question is why Samsung make 1 board for everything, psu+main+tcon all in one….and I like to fix because I didn't find a main board with this model .
For your question I checked the board and I find two ic memory, ic501_ut that is q80c-104gip that should be a en25q80c-104gip but i didn't find a lot on internet. And in position ic503 that is a 25qb-104 gip that I find easy on internet. Are they what are you looking for? I give you the photo

[Davi.p]

The correct one is the Q40B (not 25q as you said, but is 25Q40 entirely) most probably, if you can enlarge the view on photo (please cellular in landcape not portrait), i can see testpoints definition, or better, if you can confirm the TP that belongs to that chip is named "MPU_debug_TX" you're 100% sure it is the standby mem. and you can flash it, you can use even from different size of screen but same series..

[PNI E.]

The correct one is the Q40B (not 25q as you said, but is 25Q40 entirely) most probably, if you can enlarge the view on photo (please cellular in landcape not portrait), i can see testpoints definition, or better, if you can confirm the TP that belongs to that chip is named "MPU_debug_TX" you're 100% sure it is the standby mem. and you can flash it, you can use even from different size of screen but same series..

I take a better photo of the chip, and a landscape, there are a lot of point of control, and I have main cpu debug tx. There are a lot of this point control and description, so I don’t know if I’m doing good. But the point near the name main cpu debug tx go to the first pin of the q40b I don’t know if it s correct or I’m checking wrongs point. Do you have the dump of it because I really don’t have haha

[Davi.p]

OK it's clear, the chip is the 25Q40, but i don't have dump, search on russian forums and maybe also on russian search engine Yandex.ru, but todays it's difficult, needs credits..

[PNI E.]

OK it's clear, the chip is the 25Q40, but i don't have dump, search on russian forums and maybe also on russian search engine Yandex.ru, but todays it's difficult, needs credits..

ok first thing i try to desolder it from the main and read, and see what i have, then hope someone here can help me.

[PNI E.]

If you have a completely clean dump, then most likely there is poor contact in the socket with the chip, dirty pins on the chip from flux, the power supply on the programmer is set to 3.3v, using a jumper, the chip is inserted correctly, not turned 180 degrees?

so i desolder the ic, the program with detect find the 25q40, i read and i have something, so or it s not working, but we cant know if we dont have an other dump or the problem is somewhere else...maybe in the psu...because i have 13 volt and not 11,8 that it s written on the board on the strtandby point....i really dont know ahah. hope someone can find the dump or say me if i have something broken in the main. now i give you the dump of the standby ic that i read, i dont know if there is someone who can understand if it s ok or no.....the first part it looks like there is something, then all blank and almost on the end there is a string with the alphabet like abcdef ecc...

[Davi.p]

i watched the bin inside, it is almost surely bugged! (1. many FF blocks, 2. data block too short)

[PNI E.]

i watched the bin inside, it is almost surely bugged! (1. many FF blocks, 2. data block too short)

really if it s the problem we found the problem...then we just need to find a dump i hope Iotas can help me, he is like a god of dumps ahahah. honestly i never read an ic in my life....it s the second so i dont know for that i put the dump file here if someone can help me...and didnt work so we can try also other dump maybe we are lucky....hope someone can help me...

[Davi.p]

I tried to extract it from official Samsung site update file, it's very difficult, i tried this site: specifying the following params (using my imagination) and giving the "..\T-KTSU2DEUC\image\upgrade.msd" file to it , my OLD computer runs out of memory and started to give numbers.. if you want you can try yourself..

[PNI E.]

I tried to extract it from official Samsung site update file, it's very difficult, i tried this site: specifying the following params (using my imagination) and giving the "..\T-KTSU2DEUC\image\upgrade.msd" file to it , my OLD computer runs out of memory and started to give numbers.. if you want you can try yourself..

davi u are really gentle, the things is the mainboard doesnt work, i dont find a replace so we can try with all we want because the other way is waiting for find a used mainboard or trash the tv so we can do all we want. i dont understand what i should do...i go to that site you give me put some parameter and it give me back the dump file? or it s or check if the dump file i have works?


so i tried the site, i download the firmware update from samsung, i put the file upgrade.msd in that site but give me back after try to decrypt bad decryption....

[PNI E.]

If you have a completely clean dump, then most likely there is poor contact in the socket with the chip, dirty pins on the chip from flux, the power supply on the programmer is set to 3.3v, using a jumper, the chip is inserted correctly, not turned 180 degrees?

Iotas we need your magic......

[Davi.p]

don't worry, i will repeat attempt maybe later, don't do a thing, it is far from.your skills maybe

[PNI E.]

my skill is over the moment it s not a diode in short hahah so im far away, with your parameter i had a file but it s 1 gb...so i think i have to find the part i need, or i made a mess ahha but i really cant do nothing ahah it s over my knoladge. dont worry i dont do nothing i didnt sold back the eprom too ahah waiting an help from you ahah

[Davi.p]

are you saying that the web page i gave you made a file for you of 1Gb? That file can contain or not the mini flash data, but i cannot receive the file, it's too big, i wonder why my pc can't handle it, maybe limited virtual ram file.. i'll check

[PNI E.]

are you saying that the web page i gave you made a file for you of 1Gb? That file can contain or not the mini flash data, but i cannot receive the file, it's too big, i wonder why my pc can't handle it, maybe limited virtual ram file.. i'll check

yes david firstly i tried with other parameters but give me an error, then i look better at your photo and i put the same your parameter and i had the file it s like 1 gb, i tried to open it, and i understand it s all the firmware because there are a lot of things ahahah, so i had an idea to look for with the comand find in the text edit software to find the first words of the dump i extract from the 25q40. the problem is i have a really old pc, it s a dual core and when i try to find the first word of the dump that i have my pc freeze ahah. i give you the link of the file u can dowload on gmail if u want help me and the dump tht i read on the 25q40 is here so u can dowaload and check if you can find the part i need...if i understand what u want to do.... google drive say it could be a virus but dont worry it s only the file i download. here the link https://drive.google.com/file/d/1_hw...usp=drive_link

[Davi.p]

so i had an idea to look for with the comand find in the text edit software to find the first words of the dump i extract from the 25q40

very good idea, the best thing is to try to find a typical or particular ASCII string, now i'm at work, if you want i say you the trick, it cannot be opened a giant file on a text editor, you need HxD, the best hex editor, even on very very old PC no problem, UPDATE: i watched the bin on the mini flash, there are non ASCII strings except "SAMSUNG".. so not the best!! (it would be everywhere)