Dell XPS L322x dead charging circuit

[MARHD]

Hi guys

I'm looking to fix my XPS 13 L322x, the laptop still works 100% and im fairly certain the battery is ok, but the charging circuit as you can see in the images is blown. I really need a schematic, as the only one I can find is for sandy bridge, however the one I have is ivy bridge. Perhaps someone more knowledgeable would know if the charging circuits are the same or not. Or maybe if someone knows the components which are blown, I know its unlikely but yeah any help is good help

Thanks

[piernov]

Re: Dell XPS L322x dead charging circuit

Apparently schematics for Quanta D13B is not available. Use Quanta D13, this section should be similar enough.
Pictures are very blurry but it looks like PQ16 and PQ17 are blown. Those are part of the AC adapter identification circuit, so without them you should have a warning about AC adapter not being recognized when turning on and the battery will not charge.
Those components should not blow like that so I think 19V got sent into this circuit (center pin and charger voltage got shorted togother). Make sure the fault is cleared and you don't get 19V on the PSID of the power connector.

[MARHD]

Re: Dell XPS L322x dead charging circuit

Hi,

I think I'm in trouble now, I ordered some MMST3904 and FDV301N chips to replace the blown ones. And before i changed them I thought I'd make sure they were correct so I took close up pictures of the blown components to read the markings and I think I've just bought the wrong stuff. Attached are the images

[MARHD]

Re: Dell XPS L322x dead charging circuit

Does anybody know if I can use the components I have, and if not which ones do I need. I'm not that good at reading smd markings

[MARHD]

Re: Dell XPS L322x dead charging circuit

Bump

[SMDFlea]

Re: Dell XPS L322x dead charging circuit

The 1st part is a BAV70W https://cdn.badcaps-static.com/pdfs/...d417ea34e6.pdf

The 2nd i`m not sure,it could be a AO3409L .

[MARHD]

Re: Dell XPS L322x dead charging circuit

Rip so I did buy the wrong stuff. Can anyone confirm that the second component is a AO3409L

[MARHD]

Re: Dell XPS L322x dead charging circuit

Here is a better image of the component. As far as I can tell it says A9EA and 2X on the side (the E has an underscore)

[MARHD]

Re: Dell XPS L322x dead charging circuit

Anyone? I was hoping to order it today

[MARHD]

Re: Dell XPS L322x dead charging circuit

Bump

[MARHD]

Re: Dell XPS L322x dead charging circuit

b

[SMDFlea]

Re: Dell XPS L322x dead charging circuit

I`m 99% sure its a AO3409 .

[MARHD]

Re: Dell XPS L322x dead charging circuit

Ok cool. I can`t seem to find the AO3409 locally but I did find the DMP3160L-7 as a cross reference. Do you think it will work? It seems pretty close (I have attached the datasheets)

[dellxps15]

Re: Dell XPS L322x dead charging circuit

full of ao3409 on ebay.... take time and wait for the right componnet