Dell e7480 Laptop cannot start with batery connected

[Askic]

Hello guys,
I have a relitvely new laptop with a motherboard problem. It is Dell e7480 and there is no schematics for it.
Laptop cannot start and doesn't show any signs of life. But when baterry is disconnected from the mainboard, laptop starts normally and works OK.

Does this mean that problem is located in a very close proximity of charger IC?
Battery is good. Did you have any similar experience? On the motherboard, there is evidence that something was burnt.

Thank you.

[SMDFlea]

Re: Laptop cannot start with batery connected

A schematic and boardview is available on some paid sites. If you make a request in the "Schematic requests ONLY!" section someone might post it - https://www.badcaps.net/forum/forumdisplay.php?f=41
It looks like its had a little liquid damage in that area .

[darrkoo]

Re: Laptop cannot start with batery connected

Hi
Elements to be replaced:
L902 - 0.82uH
hibrid mfet pq904, pq905 - AON6992