Samsung "MU" series (UN, UA, UExxMUxxxx) fault dump IC1604 25Q40...

[zmeutul]

Done, try it, don’t forget about status register (0x88, 0x42).

Perfect. The TV works. Thank you very much.

[lotas]

Hello. I also have a samsung ue65mu6172 with the bn41-02568b motherboard that doesn't turn on and doesn't have the standby LED. From what I saw in the hex of the W25Q40CL chip, it seems to be corrupted at first. Can you help me with its repair? Thank you very much!

Done, try it, don’t forget about status register (0x88, 0x42).

[zmeutul]

Hello. I also have a samsung ue65mu6172 with the bn41-02568b motherboard that doesn't turn on and doesn't have the standby LED. From what I saw in the hex of the W25Q40CL chip, it seems to be corrupted at first. Can you help me with its repair? Thank you very much!

[lotas]

Hi, I have a Samsung TV model UN43MU6100GCZB (mainboard BN41-02568B BN41-02568). It first had random HDMI issues, then progressed to turning on with backlight but shutting off after a few seconds. All main power rails are present. Could you please check this dump? I suspect its the main problem. Thanks a lot!

Hi, your dump is fine, working, the problem is different.

[pepebmx]

Hi, I have a Samsung TV model UN43MU6100GCZB (mainboard BN41-02568B BN41-02568). It first had random HDMI issues, then progressed to turning on with backlight but shutting off after a few seconds. All main power rails are present. Could you please check this dump? I suspect its the main problem. Thanks a lot!

[yureyko]

My dear lotas,

I ordered the Winbond W25Q40BVSNIG and W25Q40CLNIG chips to check if there will be any difference.

[Diah]

[QUOTE=lotas;n3596169]

Don't make me laugh, where did spi flash get the I²C Protocol from, it's not eeprom.
https://www.fs-pcba.com/ru/spi-vs-i2c/[/QUOTE

then start to laugh lotas, script written as befehl which SoC do it as I2C act via eMMC / NAND firmware , when position of script address at SPI or eEPROM different the SoC will take order but it cant deliver it to Main Firmware.. this called Step BY Step start..

[lotas]

W25Q40BVSNIG have difrent clock signal at I2C will not take effect as the CL

Don't make me laugh, where did spi flash get the I²C Protocol from, it's not eeprom.
https://www.fs-pcba.com/ru/spi-vs-i2c/

[Diah]

W25Q40BVSNIG have difrent clock signal at I2C will not take effect as the CL

[lotas]

I haven't tried it, try replacing it with this one.

[yureyko]

I desolder the SPI chip and clamp it with a clip. I haven't had issues with this before.

Will the Winbond W25Q40BVSNIG chip work?

[lotas]

Do you use it through a clamp or do you unsolder the flash and use an adapter on the programmer?
Try another flash...

[yureyko]

I was experimenting with everything back then... Now all the settings are correct.

[lotas]

I tried your firmware, but I have the same problem. I have a black CH341A.

When I try your other firmware for different TV models, I still have the same problem. It's probably an issue with the programmer or the SPI chip.

And in the settings it is set as green.

[yureyko]

Try this dump.
And is your CH341A black or green?

I tried your firmware, but I have the same problem. I have a black CH341A.

When I try your other firmware for different TV models, I still have the same problem. It's probably an issue with the programmer or the SPI chip.

[yureyko]

Try to remove protection first, i.e. remove all checkboxes and press "Write", then erase and write dump again, then set the status register again...

The same behavior in three programs (SiberiaProg, Colibri, NeoProgrammer).

[lotas]

Try this dump.
And is your CH341A black or green?

[yureyko]

The same result, it immediately enables that parameter.

[lotas]

Try to remove protection first, i.e. remove all checkboxes and press "Write", then erase and write dump again, then set the status register again...

[yureyko]

Maybe I have a problem with the SPI chip or the CH314A programmer. Mine is not modified. Do I necessarily need to modify it?