Un50mu6070 Mainboard issue

[Techplayer]

Re: Un50mu6070 Mainboard issue

TV turns on now, but it only shows a blue background and no image. It looks like I have another issue.

[Techplayer]

Re: Un50mu6070 Mainboard issue

Thank you. I will test it and let you know the result.

[lotas]

Re: Un50mu6070 Mainboard issue

Someone else's, working firmware (Dump) will not help you, here's your restored one.

[Techplayer]

Re: Un50mu6070 Mainboard issue

I have a similar issue with a UN65MU650DFXZA. The tv presents the same symptoms as the original post by Storyteller12. Does anyone has a working bin file for this tv model? I am attaching the original bin file.

[alltvrepairs]

Re: Un50mu6070 Mainboard issue

Am following this thread as had issues on MU and KU series. I use the EZP2010 programmer and use new chips as far as possible. On a recent board the issue I managed to fix a no display problem replacing the upper IC 25Q80 (sorry I don't have the IC number here) by copying from a similar working board. I wasn't aware of any protection bits so maybe either I was lucky. After each read and copy I always verify the copy.

I have kept copies of both ICs as well if you need.

[crym1111]

Re: Un50mu6070 Mainboard issue

Hi all,
Because when i read 25Q40 from KU6xxx series found SR 1 set 0XAC and SR 2 set 0x2; in other case i found SR 1 set as 0x2C and SR 2 0x2.
Could somebody to confirm how must be set SR for KU series...?
Regards

[lotas]

Re: Un50mu6070 Mainboard issue

Hi Lotas,
For xxMU6xxx series you have to set on the programmer "STATUS REGISTERS"
0x88, 0x42.
For xxKU6xxx series is the same rule and the same set for SR (0x88 and 0x42)...?
Kind regards

Hello, in "MU" the cap in the 25Q40 firmware often flies and so that it does not fly off the first time it is turned on and these SRs (0x88 and 0x42) are put, I don't remember about "KU".

[crym1111]

Re: Un50mu6070 Mainboard issue

Hi Lotas,
For xxMU6xxx series you have to set on the programmer "STATUS REGISTERS"
0x88, 0x42.
For xxKU6xxx series is the same rule and the same set for SR (0x88 and 0x42)...?
Kind regards

[Davi.p]

Re: Un50mu6070 Mainboard issue

Hijacking other one's thread does make time wasting from the involved users.. Open your thread please...

[Diah]

Re: Un50mu6070 Mainboard issue

status reg make conflict always... using the CH341A programmer software V1.4 will be fine... the spi will not change first secor.

[lotas]

Re: Un50mu6070 Mainboard issue

again, no...

Try putting SR first, and then write Dump.

[lotas]

Re: Un50mu6070 Mainboard issue

For this series, the header (the first bytes) in the Standby power firmware just flies off. And at the same time, even the indicator will not light, verified.

[Diah]

Re: Un50mu6070 Mainboard issue

lotas modifying are correct , the problem with active STBY LED indicator are HW issue not SW.

[crym1111]

Re: Un50mu6070 Mainboard issue

i'm so sorry about all your effort

[crym1111]

Re: Un50mu6070 Mainboard issue

again, no...

[crym1111]

Re: Un50mu6070 Mainboard issue

kind regards, i will tested soon.

[lotas]

Re: Un50mu6070 Mainboard issue

Try

[crym1111]

Re: Un50mu6070 Mainboard issue

i don't have new pieces but i can erase and are checked as blank.

[crym1111]

Re: Un50mu6070 Mainboard issue

One of ic's that i tested, attach read file.

[lotas]

Re: Un50mu6070 Mainboard issue

Do you have two new 25Q40 chips or one native second from a donor?