Samsung Series 5 dead (np530u3c)

Hi there, my name is Martin. Hope you can help me figure out something.

My Laptop is absolutely dead, it won't turn on and also no lights are on (even the one that shows charging when charger is plugged in).

I think I might have inverted charger polarity, repairing it because cables where loose.

I Meassured with charger plugged, and I get 19v on some points (marked on pictures as yellow arrows).

At button battery: 0v
At battery charging slot: 1V

I read it could be a fuse or diode, but I couldn't find any blown part and also everyhting is so small I can't even see. Most components have no writing on them.

Please let me know what else can I meassure to figure out where's the problem and if it's possible to save the laptop.

Thank you!

 

I believe that there are some surface-mounted fuses on the mainboard but I can't help you in identifying them on the board. There are some photos of these fuses here which might help. The fuses would sensibly be close to where the power cable connects to the main board and you can check their health by measuring the resistance with a multimeter (it should be close to zero).

John

 

Right where DC connector connects to the board there is comething similar, the one with the biggest of three arrows. That one shows continuity and i can get 19v on both sides of it, so if it's a fuse is ok.

On the other side, how and why is it possible that I get 1V on battery connector?