Why is there no LED backlight?

Hello!

MB there are those who are versed in the technique?
Here is the problem: the laptop Acer Aspire v5-571g one morning it stopped working LED lights. Turned out everything was OK, included on the trail. morning and no backlight.

Okay, I replaced the Flex cable - to sense 0.
Found a diagram on the Internet, checked the serviceability of the motherboard:
5c9e5a79965c8025065593.jpeg

1-4: 19.4 V
9-10: 3.3 V
38-40: 3.3 V
15-16: 1.2 V

Everything seems OK?
I think the Mat. the fee is serviceable and you can buy a new matrix?
I thought that the LED matrix do not burn out the backlight, what happened?

Thank you.
March 19th 20 at 09:14
3 answers
March 19th 20 at 09:16
Hell, I sincerely believed that the dead train :(
:D

What else can be ideas?
I understand the stress mate. Board everything is OK? - Colt_Cartwright76 commented on March 19th 20 at 09:19
The voltages seems OK, as far as I can tell, not holding a charge in the hands
You need to throw the matrix - will go almost any led 40pin lvds. And then we will see where to go - albertha_Stroman commented on March 19th 20 at 09:22
March 19th 20 at 09:18
Maybe the backlight is kaput forever
I thought that the LED matrix do not burn out the backlight, what happened?

Burn out very often :)
MB, I just thought LED do not kill - Colt_Cartwright76 commented on March 19th 20 at 09:21
@Colt_Cartwright76, if they feed not on the limit :) - Rosalee_Hoeger commented on March 19th 20 at 09:24
The backlight is very rare, at maximum brightness 24/7 for many years no one is sitting.
But as the driver of the backlight on the scarf of the matrix and the circuit responsible for the power and backlight control on the motherboard - on a regular basis. - albertha_Stroman commented on March 19th 20 at 09:27
March 19th 20 at 09:20
Typically, the LEDs burn out, even if one burned down - all lights will not work. They can be replaced, the price is low compared to the substitution matrix. The Internet can be used to buy.

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