Laptop wont turn on without battery or AC Power

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hellow12

Prominent
Jun 28, 2017
9
0
510
Hi there, I have a problem with Samsung np300e5z. He can't be turn on with AC only or battery. To be started must used both.

If use only AC power there blink for 1 second blue light and I hear cd/dvd boot and done.

When I use only battery there happen nothing.
 

hellow12

Prominent
Jun 28, 2017
9
0
510
DMI BIOS

vendor Phoenix Technologies Ltd.
version 03QB
date 12/14/2011
Can't find from where can download new bios.

btw Diode of charge is not work others work fine. When I open laptop I saw something wrong there, something like little burn thing. I don't think so diode can broke whole system for charge.
 

atljsf

Estimable
Jun 17, 2015
256
1
5,210
if the diode is burned it will not allow the flow of electricity to some marts of the system, for security reasons this is done this way

it might be a fuse, not a diode

anyway, sounds like you need a new board, or a new laptop, this laptop is old and the replacement part surely costs more than the laptop if it can be found

i would take out the hard disk, put it in a external drive case and proceed with a new laptop, is a better investment at this moment
 

ffg7

Splendid
Moderator
hellow12, can you post a closeup picture of that burnt component to see what it is & if there is a "F" or "D" printed next to that component? component depending on what it is would cost maybe a couple of dollars in not less then a dollar.
 

hellow12

Prominent
Jun 28, 2017
9
0
510
never mind that was something dirty or burnout.

http://imgur.com/a/JcUKs

When I start Laptop with AC cable and battery is needed little more time to keep button from the usua. Or just Samsung work this way :)

motherboard is the problem 99%.

Okey guys thanks you very much for your time and you share with my problem.

 
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