Asus S301 Schematic or boardview

[passete]

Re: Asus S301 Schematic or boardview

Ok, I have to extrapolate from a schematic who don't belong for your motherboard. You should have 0V at pin 1, and what do you have at pin 4?

Pin 1 = 0,93V
Pin 4 = 0V

I apreciate your kindness and time Buddy.

EDIT: i have also 0,93V on Pins 12 and 13
On 6 = 2,65 and on 7 to 10 = 0 volts

[JaroTech]

Re: Asus S301 Schematic or boardview

We are supposed to be cousin, so, what do you have on the pins 5 and 6.

[passete]

Re: Asus S301 Schematic or boardview

We are supposed to be cousin, so, what do you have on the pins 5 and 6.

5 = 0 Volts
6 = 2,65 Volts (like mentioned on last post, after EDIT)

[JaroTech]

Re: Asus S301 Schematic or boardview

Sorry, I did not refresh the page, I have not seen the new voltages.

[passete]

Re: Asus S301 Schematic or boardview

Pin 5 = 0 Volts
Pin 6 = 2,65 Volts
Can you see Now ?

[ridamouh159]

Re: Asus S301 Schematic or boardview

i think that your BQ735 IS DAMAGED
and no vout
give me the names of the ic's in fotos .

[passete]

Re: Asus S301 Schematic or boardview

i think that your BQ735 IS DAMAGED
and no vout
give me the names of the ic's in fotos .

It's possible, cause i didn't found any 3 or 5 Volts on the mobo.

Here we Go: (j'en a fait une de plus par erreur )

Thanks for your Time Mon Ami

[ridamouh159]

Re: Asus S301 Schematic or boardview

le BQ -CIRCUIT DE CHARGE - it s no responsible to 3.3v and 5v .
il n'est pas responsable de la coupure de3.3v et le 5v mais il peut cause la coupure de la ligne de 19v .
je pense que dans votre cas -les voltages que vous avez donnez pour les pieds du bq montre la coupur de la ligne de 19v .....elle est claire et pas de vout pour la charge de battery .malgrè que Vin existe 19v.

[ridamouh159]

Re: Asus S301 Schematic or boardview

you can write the name of the ic 's in the fotos

[JaroTech]

Re: Asus S301 Schematic or boardview

It seems from the voltages measures, the BQ735 is indeed defective, all the voltages for the inputs (VCC and ACDET) are good, but the ACOK and the ACDRV are at 0V at the present, they should be high.

[passete]

Re: Asus S301 Schematic or boardview

you can write the name of the ic 's in the fotos

Ok, Voici les 2 Photos Refaites

It seems from the voltages measures, the BQ735 is indeed defective, all the voltages for the inputs (VCC and ACDET) are good, but the ACOK and the ACDRV are at 0V at the present, they should be high.

Do you think that i should order this IC ?

[ridamouh159]

Re: Asus S301 Schematic or boardview

Chip5 NCP CONCERNIN CPU
Chip7-chip9 J7= RT8207MGQW complete DDR2-DDR3 memory power supply controller 1.8v or 1.5v
chip 6 je ne peut rien dire car j'ai pas trouver son datasheet .
JC FL = RT8239BGQW Main Power Supply Controller

[ridamouh159]

Re: Asus S301 Schematic or boardview

http://www.datasheetbay.com/pdf/761798/RT8239B.html

[ridamouh159]

Re: Asus S301 Schematic or boardview

give us the voltage of all pins of JC FL= RT8239B and J7 FL .
LE J7 on le connais qu'il cause le probleme de coupure de ligne de 19 volt et on le trouve damaged .
tu doit le tester .qu'il ne cause pas ici un court-circuit .
bonne chance

[passete]

Re: Asus S301 Schematic or boardview

give us the voltage of all pins of JC FL= RT8239B and J7 FL .
LE J7 on le connais qu'il cause le probleme de coupure de ligne de 19 volt et on le trouve damaged .
tu doit le tester .qu'il ne cause pas ici un court-circuit .
bonne chance

Ok, je mesure d'abord les 2 IC's, JC et J7 FL ?
I need first to measure JC and J7 ?

[JaroTech]

Re: Asus S301 Schematic or boardview

What is the use to measure all the pins for the other chips when you have 0V at the output of the BQ735?

[passete]

Re: Asus S301 Schematic or boardview

What is the use to measure all the pins for the other chips when you have 0V at the output of the BQ735?

Is the BQ735 the Boss sending the voltages for the 3 and 5 Volts lines ?
Dumb question, but i see what you mean.

Shame that others very know experts are reading and maybe moking !

[JaroTech]

Re: Asus S301 Schematic or boardview

No, it's not a dumb question, the BQ735 will give 19V for all the other chips on the motherboard. If you don't have 19V on the power rail, nothing will function on the motherboard. So, you have 0V at the pin 4 of the BQ735, the motherboard is not powered by the adapter.

[passete]

Re: Asus S301 Schematic or boardview

No, it's not a dumb question, the BQ735 will give 19V for all the other chips on the motherboard. If you don't have 19V on the power rail, nothing will function on the motherboard. So, you have 0V at the pin 4 of the BQ735, the motherboard is not powered by the adapter.

Yeah, so maybe it's better if i start to replace this IC ?
No other component is getting Hot on the Mobo, so i assume that this BQ is not sending secondary 19V to the rest of the mobo ?

Thanks

[JaroTech]

Re: Asus S301 Schematic or boardview

If you want to confirm a short on the 19V power line, you must remove the resistor 10mOhm, but you did not give me the picture I asked for. So I don't know where is this resistor.