LG 42LA6130 TV - No Backlight Matrix, Sound & Picture Present: Diagnostic Tips & Measurements

Hello
TV as in topic. I don't have this matrix highlighting. There is a picture and sound too. Where to start measuring? What to check

Is the led strip powered, any measurements? I am to measure for you in points appropriate for this. Maybe more information about what was measured or done and dismantled or burned. Some more interest in the topic of LED backlight or fluorescent TV, here we do not have magic wands and clairvoyants.

It's like baking a dough, I have flour and an oven, but I don't have a rolling pin ...

Some specific measurements about the power supply, where the voltage ends and where it should be and is not there! The schematic is? What chassis of this TV?
However, he can give it to some qualified electronics engineer because you will hurt yourself.

It can be in the matrix backlight burnt diode / y burnt or fluorescent lamp or inverter but without measurements we will do nothing ...

I don't know what you say to me - chassis ..
Voltage measured - There is a std by, there is a backlight and there is no voltage on the led itself.
There is no inverter, LED power goes straight from the power supply. It should be 157V, there is nothing, sometimes 5 V.

As I wrote, it is impossible to carefully dismantle the matrix and measure which diode has fallen. greetings Damiano.

Damaged diodes.
Replacement of belts with new ones.
If you replace only those burned tv it will quickly come back to you.
ps. use search option because it is standard in lg ...

You can replace the burned but you have to play with electricity and voltage to reduce by a few percent, because they are so specially twisted to the max their durability that it came 2 years and after the warranty they fell.

You were right. Due to the fact that many LEDs were on and, in addition, efficient ones, each one shone differently - I was able to buy a set for PLN 220 on a well-known portal - all stripes - new.

And what next ? Shines ? well buddy, it's like, they are fed to the max so that after 2/3 years they will die, then read about the reduction of current flowing through them and the strips will live longer.
I did it and my aunt's darker but I prefer not to open the matrix every now and then. I also replaced all the diodes. best regards