Laptop charging problem

[reds_32]

Greetings, the simptoms of my motherboard ( http://www.aliexpress.com/store/product/intel-integrated-laptop-motherboard-for-B74Y/811119_1829356284.html ) b74y; charges intermittently, the ac adaptor y working properly, the problem resides somewere in a circuit near the dc supply in the motherboard, when this portion of the motherboard is heated with the rework station the laptops functions ok for some time, then stops turning on until heated again, the heat resolves the issue immediatly, if i keep heat applyed i can keep the laptop running, what can i try? any suggestions. thanks

picture:
http://postimg.org/image/6xagyzdzj/

 

[jarotech]

Hi, what is the number on the chip?

 

[reds_32]

Hi, its hard to read, but if i´m not wrong it says B025A, according do datasheet it is a FET, thanks

 

[jarotech]

Did you try changing the FET? And what is the make and model of the laptop.

 

[reds_32]

Did you try changing the FET? And what is the make and model of the laptop.

Sadly i have no access to any FET in that kind of package, that motherboard belongs to a local brand of laptop, but is used on ASUS brand laptop is made by a chinese company. so not much info is available.

 

[jarotech]

You don't have another board you can exchange the chip with?