Samsung UE40D5500RW TV Continuously Turning On and Off: Identifying & Replacing Motherboard

Other or what? Do you have the knowledge? It's a nice TV. I want to save him.

Freezing NAND and thinking that the problem is fixed is the same as using a painkiller on a broken tooth!

Hope it's not for me. I am well aware that this is not for long, if at all. Has anyone had that with the D6000? Whether to post a new topic.
PS. The power supply looks good, but the devil is in the details. Therefore, I repeat the question.

Welcome to the New Year,
I wish you good luck and all the best for this year.
I had a case like in the topic with UE 37D5500.
I have just completed my experiment successfully
with freezing that memory. Many thanks to Kol. Piotrjar.
Greetings. George.

There was a similar problem here https://youtu.be/dnhuTo08U6k

Recently, I was doing such a UE46D5000RW.
It turned on by itself when it wanted to and it turned off by itself, even when it was not connected to anything, only it had a power supply.
In this case, the problem was solved by:
10-second freezing of the IC1301 chip (the one with the sticker with the firmware version),
and then connecting the power to the TV,
turning it on in the service mode (INFO - MENU - MUTE - POWER)
and execution of FACTORY RESET.

After such an operation, the TV works for a few days without any problems.

Yesterday I saved the UE40E5500 with the "freezing" of the IC1302. It worked, but I have concerns - for how long? You can hear voices saying that a maximum of a month, others say three months. Somewhere there was an entry that even half a year.
A request to everyone who repaired TV by freezing - how long did your TV sets work or work?
greetings

In EU * D5500, D5700, D5520, D5720, PN51D6500, PS51D6900 PS59D6900 the only sure way is to replace the programmed nand flash K9GAG08U0E

raffael82 wrote:

dominiss1990 wrote:

Piotrjar wrote:

Hello
I know that the topic is old but still valid.
I have the UE40d5500 with a slightly cracked matrix but it can be watched.
Replacing memory or motherboards does not make sense (prices start from PLN 100 up).
I rummaged and found 2 sites that make the tv work.
1.According to the video, I reset to factory settings, but the tv kept turning off.
2. According to the description on the tv page, he came back to life. I used a freezer from the pharmacy because there was one at home.

I hope tv will work a little longer.
greetings

@Piotrjar the second way worked. Just turn on the TV and start freezing (I also used a freezer from the pharmacy), we freeze until the TV goes into normal operation - for me it happened after literally 5 seconds. And so far the TV works again

Hello,
I had the same problem, I did the second way in the following three steps and after the problem
1. Remove the back cover of the TV to access the motherboard
2. turn on the TV
3. on the flash memory marked as IC1302, let go of some "frost" and keep it on until it starts up to normal mode.

That's all

Many people ask the question, how long does the "frost" method work, and since today I had the same problem again (and of course I also eliminated it in the same way as before ) it turns out that the home repair method worked for almost a year

Hello,
I have the same problem with the Samsung UE55D8000YSXXH - it turns on and off every 2 seconds.
I'm trying to replace the motherboard, but I wanted to try the freeze method first.
I tried freezing the flash with a drugstore freezer with the power off because my freezer leaves quite a lot of frost. After drying the disc, I turned on the TV and it went on for about 10 seconds, then it returned to its previous state. Apparently freezing was too short.
Tell me, is it safe to use such a freezer while the power is on, since it leaves frost?
Is it not possible to cause some embarrassment on the plate with such a freezer?
Greetings,
Jarek

jaros21 wrote:

I wanted to try the freezing method first.

Read the earlier
entries # 32 and # 38!

You can freeze the flash drive as the tv is on, on freezing at some point it should start and stop turning off.
It is important to enter service mode and perform a factory reset.

Hello, I have a similar problem all the time turns on and off to the Samsung logo, UE D5800 model, or will the fault be flash?

Chances are it's flash what Samsung used it.
You will freeze and see for yourself.

Hello, in my UE40D5500RW it was the same, the tv was restarting about every 2 seconds, after freezing Nanda tv worked for about 6 months until yesterday and there are reboots again. Unfortunately, re-freezing did not help anymore, the tv restarts but now every 30 seconds and Smart tv does not work. Now I have to replace this die with a new, programmed one, costing around PLN 50, or shipping a CD for replacement, costing around PLN 100.

Hello,
I have a similar problem with UE55D8000YS
After connecting to the network, the TV starts and works normally, you can enter the network configuration menu, etc.
if I plug in the antenna and the image jumps in, the TV reboots and so on and on, after unplugging the antenna, it returns to normal operation, but only in the menu, when turning on the SmartHub the same - reset,
I think that the problem is the power supply that does not produce current after brightening the backlight (in the application or when starting the TV image), maybe one of your colleagues will advise something?
where to look in the power supply or maybe someone has come across something similar?

the power supply is BN44-00428A
and the board BN94-05160L

wojto15-05 wrote:

I think the problem is the power supply that does not produce current after brightening the backlight

This Set the backlight to minimum once, then to maximum and see if there's any change.

I checked what turned out? to my surprise, the bottom LED strip is dead, now the question is can it be replaced?
I repaired older TVs, the LEDs were mounted in a different way, i.e. thicker back and here?

wojto15-05 wrote:

the bottom LED strip is dead

Well, the damage is found! This TV has edge illumination, you need to replace the complete illumination with a NEW one! No "stimulants". Good luck.

I am just looking on various websites, unfortunately with little success ...

Frozen memory. TV did not surprise. Unfortunately. No change. It fires up the logo when connected to the network and goes off. He falls into a noose.

Added after 1 [minutes]:

The TV was turned off during freezing.

Have you exchanged Nanda for a new and well-programmed one? This is the most common defect in these televisions. Backlighting is a separate "disease".

bialapuma wrote:

The TV was turned off during freezing

I did such an operation a month ago because there was a loop and samjang works, but I did it as described on the power supply.

I froze gas into the lighter with the power off and it works.

The nand update after the freezing treatment lasted 8 months and the defect returned, also it is a temporary solution to the problem.

@bialapuma

What, dude, you did something and what you just sprayed with. It looks like artificial snow. ????

And when it comes to the topic itself, I have a SAMSUNG UE46D550RW after reading the topic, I found that I would try to freeze this memory, without power supply, the first attempt a few seconds at a slight interval, connect the cable and it flashes, but then when I disconnected the cable, it was necessary to repeat the treatment, so it's good that I didn't screw the case down after the first treatment. ??

I had the same problem it would turn on and off. 2 years ago I did the flash freezing treatment, it worked for 8 months, I repeated it, it worked for 7 months, I sent it to a friend from the forum who repaired it for PLN 100. It worked for about a year and unfortunately the same thing happened again yesterday. I will buy a new programmed Flash and take the board to electronics for resoldering.

Hello
Where and from whom can I buy pre-programmed Flash, can you tell me?

I used allegro.

yesterday I took it to the electronics flash purchased on the alledrogo auction site. desoldered the old one and soldered the new one. I assembled the TV and downloaded the 1027 update from the samsung website. When I started updating, it turned out that I already had this update, so I just turned off automatic updates so as not to clutter this memory. In addition, following the advice of the electronics, I reduced the backlight of the matrix because the backlight also falls after some time. Currently the TV is working. I don't know how long, but if it dies after a year, I'll do the same. Cost PLN 120. When you buy a new TV, you don't know if you won't have to look for the reason for its failure in 2 years, and here I know what and how.