[Solved] Samsung LE37A656A1FXXH: Negative Image, Distortions, Satellite Signal, Software Upgrade

Hello after a long break
I got a TV set like a topic with a negative sign - all the menus on a white background, distortions in the satellite image, just like it used to be on CRT TVs (photos below).


Searching for info on the manufacturer's website, I succumbed to the suggestion that it could be the fault of the software and I made an upgrade but it did nothing.
Current software (visible in the service menu):
T-PERLDEUC-1011.0
T- PRLPEUMD-1022.0 (upgrade from 1011.2)
T-PRLPEUS-1002.0
-----------------------------
T-EMMA2DEUB - 0106

Please contact me for the diagram, I would like to measure the voltage at the power supply outputs and modules, and of course, suggestions .
And one more question: When I tuned in to the DTV station it gives the information that not "HD resolution is not supported". The model is old (probably 2008) but does it support MPEG4 (programs from multiplexes), or does it need an external tuner / decoder? Or maybe you can replace one of the modules?

Best regards and waiting for the hint.

https://www.electronica-pt.com/esquema/tv/sam...emas-tv/samsung-le37a656a-chassis-n46a-25584/
In Samsung, the system in the T-con module next to the matrix is most often responsible for brightness regulation. Check the disc version and look for suggestions on the electrode.

JRM wrote:

Please contact me for the diagram

But a diagram of what? On the power supply you have everything well described, no need for a voltage measurement diagram.

Thanks, @robertamel
The service will definitely be helpful so you don't grope. I start work today.
Thanks also for the advice. I will let you know the results.

Regulations of the TV department - point 3 - where the exact list: matrix and modules are in this TV.
Voltages from the power supply and on the motherboard will be OK. No service required.
Kol Robertamel suggested quite accurately - I think he wanted you to find the rest of it on the forum.
I will suggest more - to exchange ASxx-x.

janomo wrote:

I will suggest more - to exchange ASxx-x.

And what will happen if this system is not found there because someone replaced it with RM5101?
The peasant will lose two days in searching and will not find.
If you want to prompt, go ahead and write:
It's about the U502 chip on the T-con T370HW02 V6 37T04-C03 board, that's a hint.

to GanCegall
Well, so you did everything for him.
And you provided what T-con is on TV and what EXACTLY to mention, and I wanted to "bury" after the forum. The only question is whether he is able to replace the system himself, whether he will go to the service and will demand the replacement of this system for e.g. PLN 30, because he already knows everything!

GanCegall wrote:

And what will happen if this system is not found there because someone replaced it with RM5101?

I think that if the system was already replaced, it probably wouldn't have fallen, I have never had another AS damage.

The author wanted to measure the voltage on the power supply, and you brutally and unceremoniously destroyed his dreams by writing:

janomo wrote:

Voltages from the power supply and on the motherboard will be OK. No service required

Why do you get away with hints like:

janomo wrote:

I will suggest more - to exchange ASxx-x.

You couldn't wait for the results of the measurements and the data that the author is required to provide at the beginning. Everyone knows what kaman is about, but somehow nobody gave up on the hints.

Hello everyone and thanks for the heated discussion

Ad vocem:
- thanks for the hints, even before I wrote the post, I searched our forum and read about this "mysterious" Axx system in T-con, but this TV stands at my friend's and only briefly checked it yesterday, the data on modules I had to specify today
- I will not carry it to the site because I can desolder the integrated circuit myself,
- I have some experience in servicing, although the last time I was on the forum a few years ago.
- sometimes offtopic gives a lot of information

Best wishes

JRM wrote:

thanks for the heated discussion

How turbulent there is nice, calm and culturally, just an exchange of views.

JRM wrote:

I had to specify the details about the modules today

Why don't you give them now? Well, unnecessarily because:

janomo wrote:

Voltages from the power supply and on the motherboard will be OK. No service required. I will suggest more - to exchange ASxx-x

So t-con remains, and there is only one chip starting with "AS", so you would come up with it right away.
Therefore, this sentence addressed to me testifies to a "slight" divergence from reality:

janomo wrote:

you provided what T-con is on the TV and what EXACTLY to mention

Click him "helped" because if it were not for his post you would probably needlessly waste time measuring the power supply and main voltages, I do not care and he will be happy.

Hello
@GanCegall,
T-con number agrees fully - I checked (T370HW02 V6 37T04-C03) and the suspicious U502 chip heats up (measured 74st. C) and increases; what is the number - unreadable - from the analysis of forum posts is AS15F, I will order and exchange.

and you helped both by this nice exchange , narrowing the search area.
I hope the final result will be satisfying. I'll let you know.

PS. And what about this HD support on multiplexes?

And another shitty topic. And all you had to do was read https://www.elektroda.pl/rtvforum/topic2869272.html
and then read about components. After entering them in the message opening the subject.
After entering the matrix of messages in the model search engine to choose, to color with similar symptoms.
After entering T370HW02 in Google (graphics), you don't even need to read crap and scribble, because the pictures direct you to specific topics and show the specific reason.

remove the t con card and replace the square circuit ref AS15

I replaced the layout and the TV works fine. Thank you all for your help.