Samsung LE32S62b TV: Power Supply BN44-00156A, Plate BN41-00811B - Black Screen, Melody & LED

Hello, as this is my first TV on the table, I am asking for understanding .
TV as in the subject, power supply - BN44-00156A, Plate BN41-00811B
When the power cable is plugged in, the TV looks as if it is on, i.e. you hear the melody (tory and the red didoda goes off) The remote control works, it communicates with the TV because the LED on the TV flashes red when you press the buttons on the remote control. image or backlight.
In the power section, I replaced the swelling capacitor CM856 which did not work. I traveled the rest of the capacitors and they are all ok.
Voltage on the main capacitor in standby 310V, after switching on 380V. I also measured the voltage on the QB802 transistor because I read something about it on a different topic. The measurements are as follows: E-16V C-22V B-16V, standby E-0V C-29V B-0V switched on. I also noticed that after switching on, the heatsinks are heating up, so the transistors work. It also heats on the plate near the matrix connector. 24V voltage on the CNM802 connector is also present. Na nodze B / L on / off 5V.
I am asking for a hint in which side to look for, whether in the power section or the motherboard.

Quote:

If your mainboard is BN41-00811B, check the 12V to the T-CON,
if this is voltage for the bottom, it is possible that the IC102 on the mainboard is defective.

* GSA32HEU chassis

Of course, all voltage outputs from the power supply are OK.
On the Main you also have "a few" stabilizers
Do you have a sound?

On IC102 on the input and output 12V, so it turns out that it is working. The rest of the stabilizers also seems to be fine, i.e. 9V, 5V, 3.3V, 2.5V and 1.8V. All current voltages.
After connecting a laptop under HDMI, nothing displays, but the music flies, that is, the present sound. Is this a problem with t-con? Can you remedy this?

Well, give the type of t-con.

the plate designation is: CPT 320WB02C

If this is how well you look at her, you will see tin points in which you can measure something.

Read, e.g., Link

bomi123 wrote:

Is this a problem with t-con? Can you remedy this?

Yes. Replace the fuse, replace the T-CON, replace the repairer.

Just what about this backlight? A miracle will appear?

I assumed that he highlighted something and knows that there is no picture.

I checked the screen for no backlighting, assuming it works (does not work), just like in laptops. After switching on, ie leaving the standby, the matrix should start, i.e. change empty black to unlit black, i.e. any motion on the matrix should appear. Unfortunately, nothing like that happens, the matrix still looks the same. I shone on the screen but also nothing.
In that case, if the backlight is not related to the image, it would be necessary to take 2 steps back and take care of the backlight in the first place. However, in laptops without a picture, there is no backlight.

The matrix backlight is switched on with a signal from the board of this model, we do not know, and in some it was enough to unplug the cables from the power supply to the board and was forced.
From the back through the holes you could see if the matrix is backlit.

A quick, specific question:

Can there be a lack of backlight through the damaged T-CON, is it another tale and the exchange of t-con will only restore the image only?

Matrix backlight is a different story, unless t-con charges the power supply and gives no voltage.

Added after 45 [seconds]:

For a moment you can disconnect him.

Zbigniew Sekula wrote:

matrix backlight is a different story, unless t-con loads the power supply

Do you know such cases in normal equipment, and not repaired, for example, by some freaks? and

bomi123 wrote:

Voltage 24V on the CNM802 connector also present

In general, write it to him "humanly", because he will come to the conclusion that T-CON is to give some tension.

After unplugging the T-CON, there is still no backlight.
I understand that the backlight is switched on with a 5V B / L ON signal? Generally all voltages on the connector going to the inverter board are the same as in the diagram.

Well, beautifully, the fuse on the inverter board marked F3 turned out to be faulty. Earlier, as I checked the fuses, I saw only two that were in working order. After bridging, it looks like everything works. I am surprised by the fact that there was nothing to be seen when shining in the dies. I'm glad, however, that I learned a lot because I "dipped" my fingers in every tile.
Last question in that case - on what fuse I can change it, so as not to overdo it. I am adding a pictorial photo (to illustrate the size next to it is a gold pin). Unfortunately, I do not have a schematic and I would prefer to exchange it for the same.

Well, give me the type of inverter because it displays two or the name of the matrix, maybe someone
something will tell you something.

2A fuse

Fuse listed in accordance with the table in which D stands for 0.25A 125V fuse. It looks like everything is flying.