Trying to Save - Samsung UN40MU6300 - No Signs of Life

[lotas]

And the chip must be soldered efficiently; on the right side, in my opinion, there is not even contact with the adapter.

[lotas]

You don't understand me at all, I wrote above that 25 series and 24 series are completely different types of memory, and why was the 25Q80 chip selected in the program when it should have been selected as 24C512?

[KYBOSH]

Spi Flash (25Q40) and EEPROM (24C512) are completely different chips and their pinouts are also different, and this eeprom is installed in a different socket of the programmer, did you install it like that? Post a photo of how you installed this chip in the programmer and a photo of the programmer log software (screenshot).

That would probably explain it!
I placed it on the same track and told the program to AutoDetect but no joy.



I placed the 24C512 on the spot I had it before to illustrate where it was when I took the reading.
The log shows the read error I was getting.

[lotas]

Spi Flash (25Q40) and EEPROM (24C512) are completely different chips and their pinouts are also different, and this eeprom is installed in a different socket of the programmer, did you install it like that? Post a photo of how you installed this chip in the programmer and a photo of the programmer log software (screenshot).

[KYBOSH]

25Q40 is standby mode firmware.
25Q80 is T-Con firmware.
They don't know what they are selling! And they don't understand these firmwares, where each one is and what it is responsible for, and it's not eeprom but spi flash, eeprom is 24C128, 24C256, 24C512,... (24 series).

Here is the original dump from IC1603_UT_KTN which the SJ chip said to replace.
I replaced it with the new chip and will see if I get any signs of life.


EDIT TO ADD:
I found the S24C512-C4K33_1319 chip you mentioned in the end of your last message @ IC801.
It is indeed DEAD. When I tried to read it with the NEOProgrammer I got the error msg "IC NOT RESPONDING"

[KYBOSH]

25Q40 is standby mode firmware.
25Q80 is T-Con firmware.
They don't know what they are selling! And they don't understand these firmwares, where each one is and what it is responsible for, and it's not eeprom but spi flash, eeprom is 24C128, 24C256, 24C512,... (24 series).

I'm actually learning a lot from you guys on this TV set!
Part of this is actually my fault.
firstly I did not read the description on the page thoroughly enough.

https://www.shopjimmy.com/samsung-bn...n-eeprom-only/

The chip they are selling (25Q80DV) that they say is the EEPROM is located at IC1603.

But we have been working with IC1604 (W25Q40CL).

In my excitement to get the chip on the board I did not stop to verify that they were the same.

I find it hard to believe that shop.Jimmy does not know the difference between these two chips. Perhaps I should email text support to see what's going on....

[lotas]

25Q40 is standby mode firmware.
25Q80 is T-Con firmware.
They don't know what they are selling! And they don't understand these firmwares, where each one is and what it is responsible for, and it's not eeprom but spi flash, eeprom is 24C128, 24C256, 24C512,... (24 series).

[KYBOSH]

Some kind of stan dump, why is it similar to 25Q80 (t-con (1Mb)), but read as 25Q40 (512kB).

I did not notice any difference until you mentioned it just now.
I went back to investigate and this is what I found.

The original chip (located under the heat sink) is a 25Q40CL.




The replacement ShopJimmy sent is a 25Q80DV



It actually matches the other SPI chip I noted in my original post.
I checked and that SPI is also a 25Q80.




So they sent the wrong chip OR the common issue isn't with the 25Q40CL under the heat sink but rather the 25Q80DV residing at the top of the board?

[lotas]

Here is the dump from the new SPI chip i got from ShopJimmy.
Unfortunately when I installed it this morning the TV still showed no signs of life at all....

Some kind of stan dump, why is it similar to 25Q80 (t-con (1Mb)), but read as 25Q40 (512kB).

[KYBOSH]

Everything is correct, dump is working, status registers are correct.

Here is the dump from the new SPI chip i got from ShopJimmy.
Unfortunately when I installed it this morning the TV still showed no signs of life at all....

[KYBOSH]

Update: I just ordered this EEPROM and it'll be here next week hopefully.
When it arrives I will read the chip it and post the dump to the repository.
Hopefully we can discern the difference from the one we have from it.
Will keep you all posted.

[Diah]

WRONG. who dont know what and how front LED work... keep silent. and learn...
in general TVs have 2 style one SW switch like here in this threat , and HW DC to DC, also stop hurting other user with yours nonsense. go play at other dummy web portal

[Davi.p]

remove the heatsink, test every choke inductor respect ground in volt, then post a very bright photo of main board with marked all the inductors with their voltage, .exclude those with no voltage, if you find one with 3,3v, then follow to witch condensers connects to, then solder an electrolitc cap across one, 330uF low esr or greater if you have nothing else, respect + -... i wanna make you do this experimental test, then try the tv..

[KYBOSH]

Everything is correct, dump is working, status registers are correct.

Thank you for this confirmation!
This tells me that ordering another EEPROM will probably be a waste of time/money as the one I have is okay.
I'll focus my attention on other parts of the mainboard to see what I can see.
I'll also see if its feasible to grab another board somewhere.

Thanks again for all of this. Very educational!

[lotas]

YES SIR!
Here is the status the chip which i just pulled off the board mainboard and read again. The dump zip file is attached.

Everything is correct, dump is working, status registers are correct.

[KYBOSH]

Use only the "NeoProgrammer" program, others do not work, I already wrote about this above! Now read this dump again, which you wrote down and it did not work (the SB LED did not light up) and post it here, I will look at it and a photo of reading the status register, which are currently in the chip.

YES SIR!
Here is the status the chip which i just pulled off the board mainboard and read again. The dump zip file is attached.

[lotas]

Use only the "NeoProgrammer" program, others do not work, I already wrote about this above! Now read this dump again, which you wrote down and it did not work (the SB LED did not light up) and post it here, I will look at it and a photo of reading the status register, which are currently in the chip.

[KYBOSH]

his problem he installed old driver.. if he plug the adapter in PC and call devices manager... he will find his CH adapter. right click on it and update driver... choose the folder Driver i gave you before it will updated the driver that all... restart pc

This morning I went in and tried to figure this thing out but with no success, I uninstalled the old driver, reinstalled it and restarted the computer but the program v2.1.0.13 with unlock feature simply would not allow for selection of the the QE field on the status registers. I have no experience with SR so I dont know what to do or even where to look to try to figure out why.
So i unstalled that set of drivers and reinstalled the drivers for NeoProgrammer (just to be on the safe side) and NeoProgrammer was able to edit the QE field. I redid everything according to lotas' instructions but when I got the chip back on the board I did not even get a solid red LED light as I did before. TV is completely unresponsive. I'll remove the chip and try it again but if that doesnt work i have 2 options. Get new EEPROM from shopjimmy or get a replacement board on the second hand market. I could have a bad RAM issue as mentioned earlier. But there are few ways for me to realistic check this without throwing money at this. At this point its a race to see how to get this unit up and running as cheaply as possible.

I'll keep you all posted and thanks for the guidance. I am learning a lot. Any other suggestions are welcome in the meantime.

[Diah]

These programs do not need to be installed on a PC (they are portable, they work from this folder where the program itself is located).

his problem he installed old driver.. if he plug the adapter in PC and call devices manager... he will find his CH adapter. right click on it and update driver... choose the folder Driver i gave you before it will updated the driver that all... restart pc

[lotas]

These programs do not need to be installed on a PC (they are portable, they work from this folder where the program itself is located).