Dead Samsung ue55mu6120kxzt

[mennyx]

Hi there,
i have a problem with the tv in the description. The stand-by led is always off. I controlled the power board and it is ok. A friend of mine told me to try flashing the motherboard bios with a ch341a programmer, but i've some questions.
I have read some guides and i assembled the usb programmer like this (i think it is correct):

https://ibb.co/7NcMD5P
https://ibb.co/KzBwBwn
Bios chipset:
https://ibb.co/6Z6LgQZ

I installed the drivers and the ch341a appears on the devices and i downloaded some vers of programmer software, but when i connect the "pincers" to the bios in the programmer software the "detect" button turn gray and it's no more clickable. The red cable of the pincers is on the chip connector with the "little hole" so it shouldd be correct.
I'm doing something wrong, but i don't know what.
More photos of the tv mainboard and lcd pannel:
https://ibb.co/RTN64Jm
https://ibb.co/TP1YwP2
https://ibb.co/3WCpTXb

Thx for the help

[lotas]

Re: Dead Samsung ue55mu6120kxzt

Never use this "clothespin", carefully unsolder this flash (without damaging nearby components) and read its contents (dump) and post it here.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

Never use this "clothespin", carefully unsolder this flash (without damaging nearby components) and read its contents (dump) and post it here.

thx! i'll try. By the way, the connection of the ch341a componets are correct?
Thx

[lotas]

Re: Dead Samsung ue55mu6120kxzt

I didn't understand your question, I wrote about the components near the flash (resistors, capacitors), when you solder, so as not to damage them.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

I didn't understand your question, I wrote about the components near the flash (resistors, capacitors), when you solder, so as not to damage them.

sorry, i meant the ch341a connections. This ones:

https://ibb.co/b15rjtG
https://ibb.co/zxV5nkQ
https://ibb.co/4TGFQK0

[lotas]

Re: Dead Samsung ue55mu6120kxzt

Not right! You have 1 red wire should be on the other side.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

Ok, so i use ch-341 programmer v 1.43 (chip w25q40cl). The detect function works fine, but i have this result:

https://ibb.co/JtpGZkT

Zipped file attached.

[lotas]

Re: Dead Samsung ue55mu6120kxzt

Ok, so i use ch-341 programmer v 1.43 (chip w25q40cl). The detect function works fine, but i have this result:

https://ibb.co/JtpGZkT

Zipped file attached.

Yes, your dump is not working, try the corrected one, do not forget to set and write the status register (0x88, 0x42) after writing the dump.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

Yes, your dump is not working, try the corrected one, do not forget to set and write the status register (0x88, 0x42) after writing the dump.

Ok i wrote the new version. But i don't know what i've to do with the status register you were talking about. How to set and write it?

Thx

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

ok, i found an old post made by you:

https://www.badcaps.net/forum/showpo...9&postcount=74

and i saw you used 2 more programs to set and write the status register. I have to use that or i can set and write via ch341 programmer?

thx a lot

[lotas]

Re: Dead Samsung ue55mu6120kxzt

After writing the dump, click on "Chip" and at the very bottom select "Status Register" and check the boxes to receive (0x88, 0x42, 0x00) and click write. And that's it. ready.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

After writing the dump, click on "Chip" and at the very bottom select "Status Register" and check the boxes to receive (0x88, 0x42, 0x00) and click write. And that's it. ready.

this is what i see, but i don't understand the boxes to check. Is it correct? Or i have to click on write without any modifications?

thx

[lotas]

Re: Dead Samsung ue55mu6120kxzt

That's how it should be.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

That's how it should be.

ok, done. I try to put it back in the tv and i see!

Thx for the helps! You made my day!

[lotas]

Re: Dead Samsung ue55mu6120kxzt

ok, done. I try to put it back in the tv and i see!

Thx for the helps! You made my day!

Please. The day was not wasted.

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

IT WORKS! Lotas thx a lot for the patience and the accurate tips you gave to me!
Thanks, thanks, thanks!

[Davi.p]

Re: Dead Samsung ue55mu6120kxzt

you finally read / written using the clip?

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

you finally read / written using the clip?

yeah i use the clip without desoldering anything

[mennyx]

Re: Dead Samsung ue55mu6120kxzt

the initial problem was the wrong connection between the clip and the usb programmer

[Davi.p]

Re: Dead Samsung ue55mu6120kxzt

ok thanks