Asus N580VD - brak obrazu na matrycy, na HDMI jest

Model: Asus VivoBook Pro N580VD
Płyta: X580VD rev 2.0

CPU: SR3Z0 i5-8300H
GPU: N17P-G0-A1
PCH: SR30W

W laptopie uszkodzony był mostek.
Bios pobrany z tego forum od matic-a.

Po wymianie:
Obecnie obraz jest tylko na HDMI.

Hello!

Is the motherboard marking code X580GD or X580VD?

sorry my mistake ... i corrected the topic
it is X580VD

Measure the voltages to ground on pins 24, 25, 28, 30, 33, 34, 37 of LVDS connector J4501, when the machine is turned on with internal screen connected and external monitor disconnected.

ok

CON:
24 - 0V
25- 0V
28- 0V
30- 0,04V
33- 0V
34- 0V
37- 19,6V

D4505:
1- 3,4V
2- 0V
3- 0V

U4501:
1- 0V
3- 0V
4- 0V
5- 3,4V

Set your multimeter to the diode test mode and measure the following voltage drops to ground:
- On pin 1 of diode D4505.
- On pin 3 of chip U4501.
- On pins 2, 3, 4, 5, 24, 25, 28, 30, 34 of LVDS connector J4501 with internal screen connected.

- D4505 n.1 = 1,45V
- U4501 n.3 = 0V OL

- LVDS:
2 = 1V
3 = 1V
4 = 1,2V
5 = 1,2V
24 = 1,59V
25 = 1,59V
28 = 0,74V
30 = 1,37V
34 = 1,41V

dernis писал(а):- U4501 n.3 = 0V OL

What does it mean? Is it 0V, or is it OL ?

OL - this is "Open line"

I think there is a problem with the connection of the PCH...right??

dernis писал(а):OL - this is "Open line"

I think there is a problem with the connection of the PCH...right??

Yes, possible.

Remove the chip U4501 from the board and remeasure the voltage drop to ground on pad 3 on the place of that chip.
If you get "OL" with both polarities of test leads, there is most likely a bad solder joint on pin W42 of PCH chip, or less likely the copper trace / PCH chip is damaged.

Reflow pomogło.. Obecnie jest problem, że laptop po wyłączeniu,.bardzo długo ma czarny ekran, jakby ME nie był czysty. ME Region jest wyczyszczonym dla pewnoaci pobrany również Bios to tej wersji z czystym ME (Od Matic)... pod mostem i jego okolicach były ślady zalaniu i kilka ścieżek "zjadło. Połączenia i elementy przelutowany.. A te w których metalizacja była w złym stanie zostały wymienione.

There may be a spill residues or corrosion under the PCH chip. Remove the PCH chip from the board and check the board under it.
If there are no signs of damage, replace the PCH chip.

As a result of the flooding, several connections on the PCB of the system were oxidized. After regeneration, the laptop worked for 5 months and was flooded again, but unfortunately this time the processor was damaged. Thanks for help