Asus N550JV wont work from battery

[ciki]

Hi laptop doesn't recognize battery but says fully charged ,and wont work from battery ,dont have schematic

[piernov]

Re: Asus N550JV wont work from battery

First make sure you use a good battery.
If it's a motherboard issue, use the boardview to help you. Check battery MOSFET and current sense resistor (and fuse if there is one).

[ciki]

Re: Asus N550JV wont work from battery

Replaced charger IC and all current sense resistor,new battery still same,the lack of schematic is worst nightmare

[Stevie2001]

Re: Asus N550JV wont work from battery

You need to go back more.
Dcin and bat+
Am not looking at shem but somewhere here it tells if adp not present then use battery you need to look here.
check b+ line.
check battery pin if giving out 19v,check if that pin is shorted if so then inject 1v and start your amps less then 1 then increase as you go

what rev is your board
check
PU8000
pin14 is gnd and rest is not so se if other pins beep with gnd

Link to boardview https://www.badcaps.net/forum/troubl...50jv-boardview

[ciki]

Re: Asus N550JV wont work from battery

my board is rev 2.1 ,PU800 is responsible for PPVCORE not for battery ,laptop working ok on charger

[jasko_jacker]

Re: Asus N550JV wont work from battery

It's important to know if the problem regard battery charge voltage or smart battery signal, so check on BAT_CON
PIN 1_2 -> charge voltage
PIN 3 -> SMB0_DAT_CLK_CON -> 3.3 v ?
PIN 4 -> SMB0_DAT_BAT_CON -> 3.3 v ?
If no voltage on pin 1_2 = charger IC or a signal to it or a mosfet

[ciki]

Re: Asus N550JV wont work from battery

AC_BAT_SYS shorted now I have to find where

[Stevie2001]

Re: Asus N550JV wont work from battery

AC_BAT_SYS shorted now I have to find where

Use boardview provided in attachment

[piernov]

Re: Asus N550JV wont work from battery

It was working with AC adpater so AC_BAT_SYS wasn't shorted.