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whirlwind123

Asus X401u wont power up

Question

Hi there.I am new here.

This model notebook wont power up

Have unmount all i can and pushed the power button for 30 secs/1 minutes

Have measured the CMOS battery voltage and it`s good

The Cooler is installed/plugged/

There was problem with board with DC Jack. I have replaced it.

I try to power the notebook with my Notebook Charger(i have asus too - 19v/65w)

Something concrete to check?

The bios chip is 25q328vsig. Can i reset it by some short curcuit?

thanks ;

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9 answers to this question

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Do you get power through the DC jack now?  Do you get an charging LEDs?  If not, can you test it with a multimeter?

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Quote

Do you get power through the DC jack now?

Yes. Black to Red, Red and Black 2 to Red, Red. 19, 20 V.

Quote

Do you get an charging LEDs?

No one LED does light

Quote

If not, can you test it with a multimeter?

Test which?

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With the battery plugged in and the AC adapter plugged in, do you get any charging LEDs is what I meant.

 

If you remove the battery and just have the AC adapter plugged in, do you get any voltage to the battery terminals?  Just curious.

 

It is looking like you will be replacing the motherboard to make this functional again.  These are relatively cheap: http://www.ebay.com/sch/i.html?_odkw=Asus+X401u&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.XAsus+X401u+motherboard.TRS1&_nkw=Asus+X401u+motherboard&_sacat=0

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With the battery plugged in and the AC adapter plugged in, do you get any charging LEDs is what I meant.

>>

nope

about battery terminal i`ll check and write.

Do you think that the motherboard will be just reheated and will goes off after 1 week usage?

I work in service and if i pay 52$ and packages comes to bulgarian customs i have to pay VAT.

If the motherboard is about 125BGN and if tell 30BGN(about 15-16$ for work) there are 155.

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If you received a negative voltage, I believe you had the probes backwards.

 

You can try reballing the motherboard and it may fix it for the short term.  Ive never seen a reballing last for a super long time even if it fixes it but it is worth a shot.

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On 3/21/2017 at 9:51 AM, whirlwind123 said:

Do you think that the motherboard will be just reheated and will goes off after 1 week usage?

You said the above, and I thought you were referring to a reball.  Thought reheat = reball.

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My thought is that blind buy of motherboard from trade site will be bad buy. And the motherboard will be just reheated with heat gun and post for sell. I hope you understand me; If it`s reballed it will be better maybe.

Maybe the more important - if i supply the motherboard with adapter(without CMOS battery and battery) and unplug the charger on battery terminals there are about 1 V.

I make short with big Resistance and hope all DC is gone BUT

with only charger

with charger and battery

with charger battery and CMOS

It wont power - no Fan working no LED

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