MSI Katana 17 MS-15851 no power after shorted forst DC mosfet /BQ24780S/

[ktmmotocross]

Hello.
Have this MSI Katana 17 MS-15851 that work only on battery with adapter and have first DC mosfet shorted. After replace not work without battery. On charger DC+ get power only for few seconds and it goes down

[fez]

could it be a battery issue,as voltage drops because it thinks battery full.

[mon2]

Also review the 2nd DCin mosfet. Check in resistance mode without power.

https://www.badcaps.net/forum/troubl...arging-circuit

[ktmmotocross]

looks like first mosfet gets lover voltage at it is p channel, but second mosfet have high voltage

dont have schema so it is hard to find

[ktmmotocross]

whole area was coroded by beer spill. i found no ACDET because of coroded uper resistor. after replace i have ACDET and laptop works on charger. But still dont want charge even as it want. i see no signal to higher mosfet so i can start tracing