Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

[ovrax]

Hello everyone!

I have a Samsung UE50NU7020W TV with an issue.

When I plug it in and turn it on, it displays the "Samsung Smart TV" logo, the logo disappears, and it doesn't respond, no reaction at all.

The backlight remains on, but I can't do anything.

I've tried unplugging the ribbon cables from the T-con board one by one, but the problem remains the same.

Any ideas? I haven't found a similar issue on the forum.

Thank you!
Ovrax

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

upload photo of the Tv back side to see all boards how connect together..... NU with T-CON !!! i would love to see its T-CON

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Indeed, there is no T-CON; I was simply referring to the two ribbons connected to the motherboard

Here are the photos.

That's the only board of the tv.
In the photo, the speakers and wifi board are removed.

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

use Go advance and upload urs photo on this forum.

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

use Go advance and upload urs photo on this forum.

Done. Sorry for that

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

show please yours screen as you said it show ssmsung smart at start up

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Here are the screen photos.

When I plug it in, and one second after.
In the second photo, the backlight is on. But nothing is displayed. No sound either.

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Here are the screen photos.

When I plug it in, and one second after.
In the second photo, the backlight is on. But nothing is displayed. No sound either.

okay... you need to take out the black heat sink, you will find 8pins chips ( SPI ) this need to freez it then plug the tv in wall... see the result
will be good if you show us the SPI chip and its lable

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Here are the photos without the heat sink.

Feel free to ask if you need more photos.

Is it really effective with the fridge? How long should I put the board in the fridge, and how long should I wait before trying again?

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

IC 503 , you need cool air spray.. not in fridge LOL
Lighter Gas can freez it too,,, but be caution don't burn your house

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Hum, I need to find a cool air spray...
You think the problem is this SPI ?

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Hum, I need to find a cool air spray...
You think the problem is this SPI ?

we need to freez it first to see any change... if no change then we have issue at the NAND or main CPU BGA issue. however if you cn find boards will be fine too... yours panel are fine.

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Ok thank I will check.

Alright, just for your information, a few weeks ago, I tried it, and the TV worked (just one time!), but it was extremely slow. Do you think if I replace the motherboard, the TV will work normally again?

Thank you.

[Diah]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

Ok thank I will check.

Alright, just for your information, a few weeks ago, I tried it, and the TV worked (just one time!), but it was extremely slow. Do you think if I replace the motherboard, the TV will work normally again?

Thank you.

sure will work your panel fine and B too.... nothings ells only left MB

BTW did you tried to disconnect the wifi / BT from the boards and turn on ??

from yours writing it was slow.. so the BGA issue very high possible under RAM / NAND / CPU.

[ovrax]

Re: Samsung UE50NU7020W TV Stuck on Smart TV Logo with No Display

sure will work your panel fine and B too.... nothings ells only left MB

BTW did you tried to disconnect the wifi / BT from the boards and turn on ??

from yours writing it was slow.. so the BGA issue very high possible under RAM / NAND / CPU.

Yes, I disconnect the wifi / BT from the board and it is the same thing.

I will check about a new motherboard and replace it.

Thank for your help !