Un50mu6070 Mainboard issue

[lotas]

Re: Un50mu6070 Mainboard issue

Now you can read the Dump after installing it on the board, and post it here again, I'll take a look at the contents.

[lotas]

Re: Un50mu6070 Mainboard issue

I see that you write in the post:
In the program:
1. Click "Detect Chip" and select W25Q40CL and "Select IC".
2. Click "Unprotect".
3. Click "Erase IC" and "Yes".
4. Click "Open File" and select your corrected Dump.
5. Press "Program IC" and "Yes".
6. Click "Verify IC".
7. Press the down arrow to the right of "Unprotect" and select "Edition SREG", put a check mark on S7, S3, S14, S9 and press "Write" and "Yes"
7. Close the program. Ready.

I wrote this instruction for CH341A (AsProgrammer and NeoProgrammer)

[crym1111]

Re: Un50mu6070 Mainboard issue

I erase two ic's and write each of them with those two versions received, set SR as you recommend you, tested one by one but no stand-by led active...

[lotas]

Re: Un50mu6070 Mainboard issue

Write down any dump (you need to look with which one it will start, it can start with any) after recording, set S.R. 0x88, 0x42 and hit "write".

And it is not clear why you are erasing two microcircuits, what else have you erased? There is one chip 25Q40.

[crym1111]

Re: Un50mu6070 Mainboard issue

Hi Lotas,
I deactivate protection and erase two ic's, tested as blank.
Write each of versions that you fixed for me and protect both ic's...no one was working...
Any ideea?

[lotas]

Re: Un50mu6070 Mainboard issue

https://www.badcaps.net/forum/showpo...1&postcount=17

Try

[crym1111]

Re: Un50mu6070 Mainboard issue

On RT809H interface must be set anything in tab Protect when you read W25Q40 ?
Because i see your info when you have to click to programming IC's...

[crym1111]

Re: Un50mu6070 Mainboard issue

I see that you write in the post:
In the program:
1. Click "Detect Chip" and select W25Q40CL and "Select IC".
2. Click "Unprotect".
3. Click "Erase IC" and "Yes".
4. Click "Open File" and select your corrected Dump.
5. Press "Program IC" and "Yes".
6. Click "Verify IC".
7. Press the down arrow to the right of "Unprotect" and select "Edition SREG", put a check mark on S7, S3, S14, S9 and press "Write" and "Yes"
7. Close the program. Ready.

[lotas]

Re: Un50mu6070 Mainboard issue

Hi lotas,
I have a motherboard from Samsung UE49MU6202, code BN94-12424C and don't have stand-by led active, attached 25Q40 that probably need to be fixed.
Can you help me?

Ok, I'll try, you are familiar with the status of the register, what needs to be set, without it the firmware will fly off again when you turn it on for the first time.

[crym1111]

Re: Un50mu6070 Mainboard issue

Forget to tell you, i have RT809H programmer...

[crym1111]

Re: Un50mu6070 Mainboard issue

Hi lotas,
I have a motherboard from Samsung UE49MU6202, code BN94-12424C and don't have stand-by led active, attached 25Q40 that probably need to be fixed.
Can you help me?

[Storyteller12]

Re: Un50mu6070 Mainboard issue

I bought a new programmer and didn’t do the mod.

Model listed by Lotas.

Rt809f

[ducky29]

Re: Un50mu6070 Mainboard issue

UPDATE: FIXED!!!

Received new programmer. First attempt did not work with your firmware Lotas. Not sure if I did something wrong or not. It was my first attempt using this programmer with the supplied software.

However I did get it to work after loading the original eeprom dump from the 55" donor board i used.

I have attached the dump from that eeprom to help anyone else that might need it.

Thanks again for all the help Lotas. Appreciate your time and expertise.

Last question, I have a Sony tv with a bad emmc. Will this RT809F programmer work for this? If not any recommendations.

What programmer did you use? Did you make the modifications that iotas mentioned or it worked straight away?

[Storyteller12]

Re: Un50mu6070 Mainboard issue

Thanks for the info. Not sure where to go from this point. I’m pretty sure it’s software related issue though.

[lotas]

Re: Un50mu6070 Mainboard issue

Hello here the firmware is in 3 chips EMMC, EEPROM, SPI FLASH.

[Storyteller12]

Re: Un50mu6070 Mainboard issue

Hey Lotas,
Here are pics of the motherboard just to follow up

[Storyteller12]

Re: Un50mu6070 Mainboard issue

Don’t have the motherboard in front of me.

But the model is HW-Q90R.

I have repaired it few different models of theses with bad power supplies. They all seem to have the same internals. ( power supply, motherboard, speaker output boards.

It seems the software is the main difference.

[lotas]

Re: Un50mu6070 Mainboard issue

What model, what is the motherboard number?

[Storyteller12]

Re: Un50mu6070 Mainboard issue

Long story short.

It would power on. But only stay on “BT” Bluetooth. I could not switch input or change volume. I tried unplugging the remote/ ir board and the buttons on the top of the unit separately with no success.

I could not get it to update through usb either.

So after all that I’m assuming it’s the eeprom or another ic related issue possibly.

I was starting with the eeprom since I have the programmer now

[lotas]

Re: Un50mu6070 Mainboard issue

Hey Lotas,
How do you fix the bin files we provide you?


Thanks

I am fixing with a HEX editor and knowledge, what happened to the Samsung Soundbar?