UE55D6200 black screen!

[vwstepha]

Hello.
I am French
I have a SAMSUNG UE55D6200 identical to the UN55D6200
In August 2022, the screen suddenly turned off
The TV clicked at first but now nothing.
I have searched many forums and looked for lots of info.
By unplugging the Main, the LEDs did not light up.* So I changed the LEDs
I bought 2 BN44-00457a power supply cards (1 on Ebay and the other on Ali).
Same problem: still no leds lighting up
I was provided with a BN44-00428a which can be installed on my TV but I do not have the same connectors
for the leds, originally I have 2 wires per led strip so 4 wires
on the bn44-00428a I have 2 connectors of 12 or 16 wires
Same for Main:
on the BN44-00428a there are 2x more wires than on the origin
I know that my power supply board is compatible with the BN44-00424a

Can I use the BN44-00428 for my TV and how to connect the cables?
Thank you

In order:
BN44-00457a
BN44-00424a
BN44-00428A





BN44-00428A

[Davi.p]

Re: UE55D6200 black screen!

with original board test it with dummy loads on the main b. connector

[vwstepha]

Re: UE55D6200 black screen!

with original board test it with dummy loads on the main b. connector

hi sir!

what type of dummy load?
and connect to which terminal that goes on the Main Board?
tks you!!!

[Davi.p]

Re: UE55D6200 black screen!

For 5v resistors, for 12v a 12v lamp
from my notes:
TEST-PSU - Resistenze da usare: 5v/0,8A= 2x3ohm/2W serie; 5v/,9A=5,6ohm/5W; 5v/1A= 5ohm/5W; 5V/1,5A= 3,3ohm 10w; 5v/2A= 2x2,5ohm/5W parall; 12v/1,25A= lampad. 15w o 3x5w in parall.; 12v/1A= 4x3w parall.; (valori approssimati x brevi test)

you have many choices, for each output around 1A is ok