Asus X509FJ-EJ115T (X409FB rev 2.0) - Bad capacitor

[Dexomol]

Hi,

Have an Asus X509FJ-EJ115T (X409FB rev 2.0),
the laptop weren't powering on, found a bad capacitor (short to ground) after a quick search.
I want to replace a new one but don't know it's rating (couldn't find any boardview / scheme).
Can some one help me find what capacitor to solder instead of the bad one? (picture attached)

[mon2]

Re: Asus X509FJ-EJ115T (X409FB rev 2.0) - Bad capacitor

Post the markings on the cap that was removed. Include a picture as well.

The capacitance and voltage will be marked on the capacitor sleeve. From those markings, can proceed to search for a proper replacement.

Is the bad cap the missing one or in the lower right of the logic board ?

For the lower right side, post a closer pic including the IC markings near these parts so the IC can be identified.

[Dexomol]

Re: Asus X509FJ-EJ115T (X409FB rev 2.0) - Bad capacitor

It's a smd capacitor. The voltage on him is 19V
In the new attached photo Iv'e allready removed it - the laptop works, but I want to put a new one.

[mon2]

Re: Asus X509FJ-EJ115T (X409FB rev 2.0) - Bad capacitor

Good pic - it helps.

The local switching regulator is the one with the markings of "2N=6C".

This part is from Richtek. Next, need to hunt down the datasheet. I know there is a lookup table for Richtek regulators somewhere on this forum...

found it through my black belt in Google-fu; Sensei should be proud.

Datasheet is attached. Next, need to study their typical appnote for a possible replacement part.

See attached.

Can you power down and confirm that the IC with "2N=6C" is pin # 15 that is linked to this missing cap ?

Believe it is the LGATE1 pin.

Update - in zooming in more, it may be the UGATE1 pin # 16 ?

[Dexomol]

Re: Asus X509FJ-EJ115T (X409FB rev 2.0) - Bad capacitor

Yeah, it's (#16) going to to Gate pin of the MOSFET.

so, if I'm not mistaking it's C1 at hte datasheet, 10uF?

[Dexomol]

Re: Asus X509FJ-EJ115T (X409FB rev 2.0) - Bad capacitor

Replaced with 10uF eventually, working good so far.

mon2 thank you very much for your help!!!