Samsung UE46D6500VSXZG: Dimming Backlight & No Picture - Tested Main Board & T-CON, Seeking Advice

Hello. Tv Samsung UE46D6500VSXZG Version No.03 after switching on the normal matrix backlight for a while, after a while it dims to about 50%. No picture.
The St-By diode reacts by blinking on commands sent from the pilot. Power supply BN44-00427A,
MAIN BOARD BN94-05105Q. After unplugging the Main-SMPS connector from the CN201 socket and turning on the TV, the backlight does not dim. The main board was based on the efficient BN94-05105E (w / g ASWO Samsung-replacement) without a positive result.
The substitution of T-CON SH120PMB4SV0.3 also did not help. In the service manual there are pushes the voltage on the CN201 connector but it is quite different than on my power supply board,
other signals and values. Probably these are the indications for 32 ", 37" and 40 "TV, and others are for 46" and more. I have measured the pins of the CN201 connector with the connector pinned and unplugged, there are differences but I have nothing to compare them with . Help needed. greetings Andrzej

The backlight reaches 100% when the welcome logo is displayed. The logo is generated in T-con. If the logo is not displayed, the matrix may be damaged.

Hello.
The Renso team does not display the logo, and the full backlight time is similar to the logo display time. The question is, how can you check the matrix at home? greetings Andrzej

On T-con are generated voltage supplying drivers of columns and rows. Vdd voltages supply the processor as well as RGB / DATA drivers in the matrix. If one of the low voltages (Vdd) to RGB drivers is missing, nothing will be displayed on the LCD. Check if they come out of the T-con and whether they run on the source-driver slat. You can have a bad T-con or the panel itself (non-contacting fleksy with a driver to the strip, or electronics on the source-driver slat)

If Vdd were good and others like Von, Voff, Vcom incorrect, then at least vertical stripes would be displayed on the screen, because RGB information would go down the matrix, and the problem would occur with TFT gates / inputs, an erroneous contrast, or so-called. grayscale, read an article in PDF on TFT matrixes, you can go to Google, there are many interesting information in English. ang.

zbyszekskibinski wrote:

Check if they come out of T-con

zbyszekskibinski wrote:

You may have bad T-con

ANDRZEJ DOMARADZKI wrote:

Substitution T-CON SH120PMB4SV0.3 also did not help.

Therefore, I am asking you to "pretend".
Well, unless you assume, buddy Zbyszko, that the repairer has two identically damaged modules! It would be funny.

ANDRZEJ DOMARADZKI wrote:

The service manual is pushing the voltages on the CN201 connector but it is quite different than on my power supply board,

Unfortunately, the information from which documentation the repairer uses, and also why can not use another, more appropriate, lack.
Because in my opinion it is the same, although in fact other letters are marked.

ANDRZEJ DOMARADZKI wrote:

I made measurement of the pins of the CN201 connector with a pinned and unplugged connector, there are differences but I have nothing to compare them with.

Knife miracle simply and astonishment that they differ.
After all, it is a total lack of understanding of the principle of cooperation of the power supply with main! In the section for professionals!
I already omit the correctness of clinging to this joint on TV symptoms.

Ladies @Andrzej_;) DOMARADZKI buy a matrix. Because it is probably not the fault of the power supply. You did not mention these two things.

The damage seems to be very simple to locate. And maybe repairing. Even without the highly specialized phrases of Zbyszko. Nevertheless, you have a pony from me, Mr. Skibiński.
---------
Edition at 15.25
Someone gave you a minus, p. S. It is tease some, because undeserving.

mirex wrote:

Therefore, I am asking you to "pretend".
Well, unless you assume buddy Zbyszko Mr. repairman has two same damaged modules! It would be funny.

opanowany. wrote:

ANDRZEJ DOMARADZKI wrote:

Question how can you check the matrix at home ??

The same as in the workshop conditions, substituting for electronics, and sometimes enough to measure something on it.

I was referring to what should be measured by Mirko, so that the repairer knew for the next time that it was possible to measure a few voltages instead of buying and substituting modules.

Maybe so. At least in your assumption. Nevertheless, you admit that the advice "check if the tensions come out of the T-con", after its replacement with another (and without the slightest effect), sounds strange.
You had a positive plus for the rest.

Hello. Kol. Zbyszekskibinski and kol.mirex are based on documentation that I was able to "track" on the internet, namely the service manual "Chassis: U69A
Model: EU ** D65 ** V *
** EU ** The D65 *
UE ** D67 ** W * included in the BPS "Electronics Service" (I can both send it to PW). There is not even a piece of schematic in it, so measurements for which to compare ??? The given connectors CN1601-J101 (Main-T-CON) contains only symbols of signals on individual pins. For CN201-CN803 connectors (SMPS-Main), on the power supply board BN44-00427A - different symbols and values (I can take a picture), that is, I move like a blind man with a cane. greetings Andrzej

ANDRZEJ DOMARADZKI wrote:

There is not even a piece of schema in it, so measurements to what should I compare ???

Yeah fact. Strange that it is not there, right?

To compare, what's written on the modules. For general knowledge about servicing TV, and Samsung in particular.
We will ask for photographs, we will ask.

ANDRZEJ DOMARADZKI wrote:

I can both send them to PW

Why not?
We will verify to what extent the descriptions differ from those of the available U69A chassis service documentation.
And what's out there in these papers from SE scribbled.

It is only to satisfy curiosity, because as I have already written, it is irrelevant to the described defect.

I gave you a plus, is some new form of rewarding in this forum ?? I have not read about it before, but when I get closer to the plus or minus icon, it can be seen that anyone who writes in turn can be given away, even if you are not the author of the lol post.

Added after 3 [minutes]:

Oh, and now, when I wanted to give myself to myself, the message 'the limit of casting votes has already been exceeded' appears.

Mr Domaradzki, remove the frame from the matrix and measure the tensions on the source-driver line as well as check the flexes (as it was written before, there may be a weak contact to one of the column drivers). The voltages on this strip are described and marked, and most of them are labeled the same with what comes out of the T-con, it can also be compared.

zbyszekskibinski wrote:

is some new form of rewarding in this forum ?? I have not read about it before, but when I get closer to the plus or minus icon, it can be seen that anyone who writes in turn can be given away, even if you are not the author of the lol post.

Yes, a new form. Currently, every reader can (now, for a month, a year) express his opinion about someone's speech. Is she professional or helpful or brings something important to the discussion.
But the point is to use this function deliberately, reasonably. So that actually valuable posts will gain some rank.
It is not about maliciously patting cons or "pros".

Thank you for the plus, but I still know that I will be the leader of this department in ... "negative disadvantages".

The author of the topic has the additional opportunity to reward some of the statements with the "helped" function.

And you have not read about it before, because - as most TV people do - you do not "fly" other forum departments, and the bosses, including fashion, are apparently not interested to spread this gadget, or the purpose of its creation.
They assume that everything will be done by itself. And while people from "computers", for example, reach dozens of "helped" in a month, the "peak of luxury" with us is a few items per month. It's been like that for years.

Hello. After the absence related to my work, I will try to catch up.
Kol.mirex I enclose the promised photos in the first place. Now, to Zbyszekskibinski, as you can see in the picture T-CON, there are no marked values about which the friend says in his answer. Secondly, if I had the option of substituting the Main Board with the efficient IC1001i IC601 that are responsible for the VIDEO, why not take advantage of the quick change and the same
with T-CON ??? The Service Manual I have is terribly trimmed, there is not even a fragment of the diagram. Suspicion falls on the matrix, but how do you check it? greetings Andrzej

Perhaps from the series, [url=www.elektroda.pl/rtvforum/topic2916881.html#14065430] is described

Hello. Column T-CON = SH120PMB4SV0.3, BN41-01743B, and on a white sticker:
LSJ460HW01-S, SK98BN950, 0542AHVSI, BLC0133. Label on the plate of the matrix:
LTJ460HW01-J, D6000-46 "DE82, BN-080344 # 4, SESK. And all made in slovakia.
greetings Andrzej

By. my opinion should be to do finally measurements as indicated by kol.SZ in his reply from 27 Apr 2015 01:48.
This T-con (AMLCD controller LPF10A1) has well-described counterpoints. on the plate what can be seen exactly on Link_ click on the photo.

Quote:

VIN_12V 12.3V
VCC33 3.26V
VCC12 1.2V
VCC18 (t_con) = VDD (for drivers) = 1.76V
AVDD (t_con) 17.1V
VDDMHL = VDDMHL1 = VDDMHL2 = 8.6V
VONE 31.8V
VOFFE -12.2V (* with minus )
VR 9.9V
VSS -7.4V * with downside

It is then necessary to compare these tensions with those of its counterparts on the left and right sides of the matrix

Quote:

VDD 1.77V
VCOMS 6.9V
HAVDD 8.6V
AVDD 17.1V
SVCOM 7.7V

Or, for comparison, disconnect: the left and then the right matrix tape .... see the effects on the screen

ps
Rather matrix Link_ from 2012.

Hello. After a long absence related to work, I sat down to this tv.
Kol.lisek, I used your help and I started removing the tape T-con. After disconnecting the first right, the image is still dark, but after disconnecting the left I received half of the good image. I mean, I came across a TV series and only remains qualify as the organ donor. Andrew

Hello. Gentlemen, thank you for the information I got from you. Because
I think that my colleague most easily helped me to say that the matrix is damaged and I give points and special thanks. Gentlemen, Zbyszekskibinski and mirex, I have already written that I treat electronics as a hobby, and not as a job and I do not want a ready solution, but a hint. If you have anything more to add, I leave the day unopened subject. greetings Andrzej

ANDRZEJ DOMARADZKI wrote:

Because
I think that my colleague most easily helped me to say that the matrix is damaged and I give points and special thanks.

Just for justice ... before the foxes, he looked into his "notes". And he begot a long post about the

Renso wrote:

backlight reaches 100% when the welcome logo is displayed. The logo is generated in T-con. If the logo is not displayed, the matrix may be damaged.

mirex wrote:

Ladies @Andrzej_;) DOMARADZKI buy pan matrix . Because it is probably not the fault of the power supply.

zbyszekskibinski wrote:

You can have a bad T-con or panel itself (non-contacting flexes with the driver to the strip, or electronics on the source-brace )

So if someone here deserves to be distinguished, it is rather Zbyszek S.

Hello. Yes, as I wrote earlier, I close the topic. I greet and thank everyone. Andrew