Page 1 of 1

Samsung NP-R522 power-on problems

Posted: Sat Sep 30, 2017 9:00 pm
by andromedax
Samsung NP-R522 CANNES/BONN CANNES-EXT GFX:AMD

Motherboard powers-on but shutdown almost instant.

If I heat capacitor ec10, (220uF 2.5v) (P1.8V_AUX) then it works.

Capacitor has been replaced with one from a donor board, but problem remains.

Any hint to repair it?

Re: Samsung NP-R522 power-on problems

Posted: Sun Oct 01, 2017 7:09 pm
by andromedax
Problem is solved.
Capacitor EC3 1000uF Nec tokin was dead. Replaced by 4x330uF tantalum capacitors and problem solved.

I have changed many nec tokin capacitors, but none of them fails with battery only powered.