Need help on a Asus x541uvk rev 2.0 board, please

[NPIRES]

Hi

Newbie here. Reading as much as i can.

I have this asus board with missing voltage on the gate's ac/in Mosfets, so it's "dead". From similar posts, gate's voltage should(?) come from BQ74780S, that i think is pu8091 on the boardview found in the forum.

1 - 0v
2 - 0v
3 - 0v
4 - 0v
5 - 0v
6 - 2.63v
7 - 0v
8 - 0v
9 - 0v
10 - 0v
11 - 0v
12 - 0v
13 - 0v
14 - 0v
15 - 0v
16 - 0v
17 - 0v
18 - 0.05v ????
19 - 0.15v
20 - 0.15v
21 - 0v
22 - 0v
23 - 0v
24 - 6v
25 - 5.91v
26 - 0.15v
27 - 0.15v
28 - 19.30v

On a side note, board works and boots windows the Sorin way.

TIA

[piernov]

Re: Need help on a Asus x541uvk rev 2.0 board, please

https://www.badcaps.net/forum/showthread.php?t=90356

[NPIRES]

Re: Need help on a Asus x541uvk rev 2.0 board, please

Thank you for the guide.

So, if i'm getting the guide right, i have this :

DCIN/VCC: pin 28 - 19v, ok
ACIN/ACDET: pin 6 - 2.63v, ok
REGN/VDD: pin 24 - 6v, ok
CMSRC : pin 3 - 0v, (comes from source of first mosfet, that is not switching on, so OK ????)


ACOK: pin 5 - 0v (not OK, right ?)
ACDRV: pin 4 - 0v (not OK, should have 24v, right?)

[mon2]

Re: Need help on a Asus x541uvk rev 2.0 board, please

It is PU8901 ( I think you meant the same ).

See attached.

[farzad.balov]

Re: Need help on a Asus x541uvk rev 2.0 board, please

Thanks.