Samsung UE55MU6102K IC1604 dump needed - TV don't start

[RomainO]

Ah OK.
Here it is.

[lotas]

Пытаться.

[RomainO]

Thank you very much Lotas !
I tried to program this bin but the TV still does not work :-(

Maybe I can explain a little bit more.
I own a UE55MU6105 TV, with no working display. Mainboard reference is BN94-12648J. Reading the forums I suspected the 25Q40 memory to be corrupted, and this is why I asked you.
The bin you provided has no effect unfortunately.

However, I also have a EU58MU6122 mainboard, that looks very similar to the other one (ref BN94-12640G).
I tried it on the TV : it does not display anything, but I can hear the menu sounds when I play the remote control, meaning that the system has a correct boot.
I tried zero-ohm resistor modification to look like the original board configuration ; it has no effect on display.

Maybe this second board could be reprogrammed to match the original one ?
I still did not understand the real function of both the 25Q40 and the 25Q80 : can you please briefly explain me ?
Should I reprogram program both to match the original board, or does one of this FW is paired with other mainboard components ?

Or maybe you have other ideas to debug ?

Thank you very much for your support.

[lotas]

Thank you very much Lotas !
I tried to program this bin but the TV still does not work :-(

Maybe I can explain a little bit more.
I own a UE55MU6105 TV, with no working display. Mainboard reference is BN94-12648J. Reading the forums I suspected the 25Q40 memory to be corrupted, and this is why I asked you.
The bin you provided has no effect unfortunately.

However, I also have a EU58MU6122 mainboard, that looks very similar to the other one (ref BN94-12640G).
I tried it on the TV : it does not display anything, but I can hear the menu sounds when I play the remote control, meaning that the system has a correct boot.
I tried zero-ohm resistor modification to look like the original board configuration ; it has no effect on display.

Maybe this second board could be reprogrammed to match the original one ?
I still did not understand the real function of both the 25Q40 and the 25Q80 : can you please briefly explain me ?
Should I reprogram program both to match the original board, or does one of this FW is paired with other mainboard components ?

Or maybe you have other ideas to debug ?

Thank you very much for your support.

Your dump was damaged, I restored it, and if the problem remains, it means the dump was damaged again, this happened because after writing the corrected dump on the programmer, you did not set and write the status register (0x88, 0x42).
There is no need to touch the second board 25Q40, it is responsible for the standby mode, but 25Q80 is responsible for the T-CON (it contains the display settings).

[RomainO]

Hi Lotas,
I made supplementary experiments, setting the status register to 0x88 and 0x42.
After programming, when I plug the power, the LED light is ON. When I power the TV the light goes OFF, and blinks rapidly when I play with the remote or the power/joystick button. (seems to be normal operation). Panel is switched on but nothing on screen.
If I unplug and replug the power, the LED does not switch ON anymore, and panel switch on instantly. I assume this is not normal.
When re-reading the 25Q40, it seems corrupted again even if I have set the security bits in the status register(verif fail, however status register still read 88/42). I tried the security bit programming with 2 programming software (NeoProgrammer and ASProgrammer), following the explanations you provided in other forum threads.

Maybe the 25Q40 IC is damaged, or something else is wrong on the board ? What do you think ?

Also, is there any way to configure my second mainboard properly to behave like the original one ?

Thanks for your help :-)

[lotas]

Hi Lotas,
I made supplementary experiments, setting the status register to 0x88 and 0x42.
After programming, when I plug the power, the LED light is ON. When I power the TV the light goes OFF, and blinks rapidly when I play with the remote or the power/joystick button. (seems to be normal operation). Panel is switched on but nothing on screen.
If I unplug and replug the power, the LED does not switch ON anymore, and panel switch on instantly. I assume this is not normal.
When re-reading the 25Q40, it seems corrupted again even if I have set the security bits in the status register(verif fail, however status register still read 88/42). I tried the security bit programming with 2 programming software (NeoProgrammer and ASProgrammer), following the explanations you provided in other forum threads.

Maybe the 25Q40 IC is damaged, or something else is wrong on the board ? What do you think ?

Also, is there any way to configure my second mainboard properly to behave like the original one ?

Thanks for your help :-)

This could have three problems
1: It's not the original dump that you posted, maybe someone before you tried to record other people's dumps, but their original one has already been erased.
2: The firmware was written down incorrectly.
You need to do this: 1 - Remove the lock (uncheck all the checkboxes in the status register and click on "write". 2 - Erase the flash. 3 - Write my corrected dump and do a check (Verifycation). 4 - Check the status register 0x42, 0x88, 0x00 and click “write” and you're done.
3: The Spi Flash itself (25Q40) is faulty, replace it with a new one.

[RomainO]

Hi,
For 1) : I am the first one who opened the TV and performed the dump.
For 2) : I did exactly what you mentionned. The status register was effectively well programmed. Used 2 different programming software to cross-check.

I made supplementary measurements on the board when it is mounted on the TV :
VCC : 3.3V
CS/ : 1.89V
WP/ : 0.3V

I think the CS/ and WP/ values look strange. They should be stable at 0V or 3.3V. I measured the 25Q80 to compare and the voltage are good.

I can imagine 2 possible problems :
- The 25Q40 is faulty, and leaks/draws current that disturb the board signals (as you mentionned in your point 3)
- Another component on the board is faulty and disturb the board signals

Do you concur with that ?

I will anyway replace the 25Q40 and try if it solves the issue.

While waiting to find/buy the component, are there any trials I can do with my other mainboard ? Is it possible to configure it to behave like the original one ?

Thanks

[lotas]

Regarding the second board, you need to compare the placement of position resistors on the original board and set them in the same way on the other one and replace the dump 25Q80 from the original board with another one.

[RomainO]

Regarding the second board, you need to compare the placement of position resistors on the original board and set them in the same way on the other one and replace the dump 25Q80 from the original board with another one.

I have done this. The TV seems to boot correctly (I can hear the menu sounds when I use the remote control), but the panel does not display anything.
Is there a chance that my original 25Q80 dump is damaged as? If yes, is there some way to fix it ?

[lotas]

Try

[_adi_]

Dear Lotas,

I have a UE55MU6202 with no standby issue. The supply board is working just fine, on the mainboard I have 3.3V on the pin 8 of the IC1604.
Could you be so kind to help me fix it?

[lotas]

Dear Lotas,

I have a UE55MU6202 with no standby issue. The supply board is working just fine, on the mainboard I have 3.3V on the pin 8 of the IC1604.
Could you be so kind to help me fix it?

Try.

[lotas]

Can't write a dump?

[_adi_]

Try.

Dear Lotas, thank you very much for the dump.
I will write your dump on Monday, and I will let you know after.
Have a great day!

[lotas]

Dear Lotas, thank you very much for the dump.
I will write your dump on Monday, and I will let you know after.
Have a great day!

Ok, don’t forget to install and write status register (0x88, 0x42) after writing dump.

[_adi_]

Ok, don’t forget to install and write status register (0x88, 0x42) after writing dump.

Hi Lotas
Is working, the tv was recovered with your dump.
I wish you all the best!

[lotas]

Hi Lotas
Is working, the tv was recovered with your dump.
I wish you all the best!

Ok! Thank you!

[d2fx]

Lotas,
I have a question (if it's not indiscreet).
how you made to fix the corrupt dump.
I do not see any similarity between the defective and the corrected.
Did you use a correction program or do you correct directly in As Programmer?

Thank you very much for sharing your knowledge on this forum.
you are a master

[lotas]

Lotas,
I have a question (if it's not indiscreet).
how you made to fix the corrupt dump.
I do not see any similarity between the defective and the corrected.
Did you use a correction program or do you correct directly in As Programmer?

Thank you very much for sharing your knowledge on this forum.
you are a master

Thank you! Everything is done in the Hex editor, the damaged area is cut out and replaced with a working one...

[d2fx]

It impresses me this high level

thank you for the explanation Lotas