Samsung ue49mu6120

[Alberto]

Re: Samsung ue49mu6120

There may be a problem when removing or installing spi flash 25q40, the components moved around this memory (resistors ...), if you used a soldering station with hot air, the flash itself is not working properly, there may be a problem in the T-Con firmware (25Q80), the problem is in panels...

we have tried with a main board from another television and everything works correctly, so we believe it is a firmware problem of this board.
the memory has been removed with a jbc RMSE-2QF station and all the components are perfect around it.
I don't know if you can guide me further.
thank you

[lotas]

Re: Samsung ue49mu6120

There are four firmware chips on this board, these are two spi flash - 25Q40, 25Q80, one eeprom 24C512 and one eMMC.

[Alberto]

Re: Samsung ue49mu6120

There are four firmware chips on this board, these are two spi flash - 25Q40, 25Q80, one eeprom 24C512 and one eMMC.

do you have the firmware to test the 25q80 and the 24c512?

It is the last test that I have left to do, I am desperate.

Before reprogramming the 25q40 chip it did not do anything completely dead and when reprogramming it there is standby and it blinks but no image or backlight.

Thank you very much for your time and dedication, I am very grateful

[lotas]

Re: Samsung ue49mu6120

But they are unlikely to help, the T-Con settings and everything related to your panel (diagonal, manufacturer, specific settings ...) are stored in the 25Q80, try replacing the 25Q40 with another one.

[lotas]

Re: Samsung ue49mu6120

Before reprogramming the 25q40 chip it did not do anything completely dead and when reprogramming it there is standby and it blinks but no image or backlight.

Usually such behavior, as I already wrote, does not match the software version in SPI Flash (25Q40) and in eMMC.

[Alberto]

Re: Samsung ue49mu6120

But they are unlikely to help, the T-Con settings and everything related to your panel (diagonal, manufacturer, specific settings ...) are stored in the 25Q80, try replacing the 25Q40 with another one.

i tried with a new w25q40 chip and same problem.
convinced that the problem is the firmware because there is no response signal on 25q40 with oscilloscope

[lotas]

Re: Samsung ue49mu6120

Try another option.

[lotas]

Re: Samsung ue49mu6120

i tried with a new w25q40 chip and same problem.
convinced that the problem is the firmware because there is no response signal on 25q40 with oscilloscope

I understand everything perfectly, the fact is that when you turn on the TV, the processor checks the checksum with the spi flash and with the emmc area, and if it does not match, then exactly the same problem as yours will come out.

[Alberto]

Re: Samsung ue49mu6120

Try another option.

tested and with this file it gives standby slow flashes

[lotas]

Re: Samsung ue49mu6120

tested and with this file it gives standby slow flashes

Let's try different software versions.

[Shwed84]

Re: Samsung ue49mu6120

Hello,
I have the same problem with my
SAMSUNG UE40MU6470UXRU .Can you help me ?
Thank you
MB: BN41-02568B
LCD: CY-KK040HGNV3V
the number on the sticker: BN94-11958K

[lotas]

Re: Samsung ue49mu6120

Hello,
I have the same problem with my
SAMSUNG UE40MU6470UXRU .Can you help me ?
Thank you
MB: BN41-02568B
LCD: CY-KK040HGNV3V
the number on the sticker: BN94-11958K

Try.

[Alberto]

Re: Samsung ue49mu6120

Let's try different software versions.

Problem solved. I have put in a new main board and everything works fine.
Thanks for all the help and interest shown Lotas.
Thank you

[Jovica123]

Re: Samsung ue49mu6120

Hello lotas please fix my dump
Samsung ue55mu6270uxzg
Thank you in advance !

[lotas]

Re: Samsung ue49mu6120

Hello lotas please fix my dump
Samsung ue55mu6270uxzg
Thank you in advance !

Try.

[Jovica123]

Re: Samsung ue49mu6120

Thank you,it is working !

[bmt_hr]

Re: Samsung ue49mu6120

Maybe You can check this attached file good or not.
BN41-02258A, UE55KU6070

[joaoubina]

Re: Samsung ue49mu6120

HI dear friend Lotas . can you help me?!!!
iI have a samsung UE49MU6205K and no power on , can be the same??
Thanks

[joaoubina]

Re: Samsung ue49mu6120

i forgote the file ,

[lotas]

Re: Samsung ue49mu6120

i forgote the file ,

Your firmware (Dump) is working!

Also try this dump, if it doesn't start with it, then you have another problem.