LG 55EC930V Screen problem

[Bandsei]

My screen looks like this

A black beam misscollored ,and "dark" on the right side.
I have solved a problem with power of after 3 sek. with a service remote controll
I have cleaned the ribbon wires from the T-Con
.
Bernt

[Davi.p]

So bad panel... i never touched an oled, have you wish to disassemble a bit the part where flat cables enters toward the panel? i have an idea, i wish to see if there's a particular similar to lcd panels, you can make some photos

[Diah]

you have not only the black but also white lines on the right side..
the best way are to test the T-CON driver boards & the panel as stand alone. we do explained it over here several time at OLED threats.

[Davi.p]

i guess there's nothing to do, bad screen + bad tcon.. but maybe a tcon rep!acement could be worth the pain.. but replacing tcon on oled could be very difficult..

[Bandsei]

you have not only the black but also white lines on the right side..
the best way are to test the T-CON driver boards & the panel as stand alone. we do explained it over here several time at OLED threats.

I will try to test T-Con and panel.
Thank you

[Bandsei]

i guess there's nothing to do, bad screen + bad tcon.. but maybe a tcon rep!acement could be worth the pain.. but replacing tcon on oled could be difficult..

😳 Ouh.
Will try to test T-Con and panel seperately

[Bandsei]

This is tested as described

[Diah]

This is tested as described

if there no damage on the Side panel of the OLED Module, the effect say Off state of OLED cells where the black line.. and it washed the picture on the right down side... its Panel Issue.... but the OLED Cells VCC fed from T-CON driver boards.. and we do have one colonies OFF....time for HW level.... show us all boards especially the left side of the T-CON boards if there are OPEN R ... some model have one boards extra between MB and T-CON

[Davi.p]

this test, for me, is only to rule out main board.. so you are at the beginning point.. i never read here or elsewhere a method to recalibrate screen..

[Bandsei]

If i remove ribbon 2 or 3 from the screen i get a short picture as shown ,No black beam.

[Diah]

If i remove ribbon 2 or 3 from the screen i get a short picture as shown ,No black beam.

on oled module must always 4 ribbon connected.... invest on it to replace T-CON

[Bandsei]

My latest "test" shows leds in the black beam can be white.
I will look for a T-con
Thank you for your reply

[Davi.p]

WOW.. what electronics..what a big power board... can you tell me the printing of U18-18-46-48? do you know the new tcon can be a problem?

[Bandsei]

What is U18-18-46-48? Components?
What is the problem with a new T-con ? I am new to theese "modern" TV.s
And yes it is a big Switch mode psu.

Bernt

[Diah]

WOW..

so you never have OLED under yours eyes... also keep calm and don't spam threat you have ZERO Knowledge about it

[Davi.p]

First, message to our friend Diahrrea: you are not enough good to tell me to shut up, i've seen you tell so many stupid things in threads, you have to learn by others, so keep calm you and learn education.. last, "thread" not "threat".. ebete crucco..

OP: Just my curiosity, U17 etc are the chips position, are them LVC244A marked?
Are you able to do an half reflow to the Altera SoC? The main chip..
or even the ram and emmc chips.. (mostly these last)..

Last.. you can ereditate the screen calibration from the donor tv, this is very common, every oled screen borns different and become more different as much as it is been used.., so pray for a few used tcon.. the better is a new tcon from tv smashed by shop's transport.. this means bad steady blotches and halo on image.. bye..

[Bandsei]

The ic´s is marked LVC 541A

I have read that some people put the board in a oven set to 200 .Could i reflow like this?

.Do you put flux on before reflow?

[Topcat]

Kids kids kids..... Take the personal attacks somewhere else....

[Bandsei]

Thanks Topcat

I have ordered a used Tcon board on Ebay Original LG T-CON Board 6870C-0555A LC550LUD-LGP1-831 aus TV 55EC930V-ZA | eBay

Bernt

[Bandsei]

I got a used T-Con board from Ebay .It gives almost the same pictures .
It must be the screen then?

Bernt

[Diah]

not almost... feed it with signal so i can compare the picture as your first Post

[Davi.p]

So bad panel... i never touched an oled, have you wish to disassemble a bit the part where flat cables enters toward the panel? i have an idea, i wish to see if there's a particular similar to lcd panels, you can make some photos