Solved

Using multi adapters on a Compaq laptop?

Posted on 2008-10-30
7
333 Views
Last Modified: 2013-12-11
I have a laptop that the center pin had snapped out of the DC socket, so i replaced the DC socket and tried to power up the laptop but nothing happened.  The adapter i was given was a multi voltage adapter not the original adapter that came with the laptop.  The adapter is set at 19V which is what the laptop is meant to take and according to the adapter when set at 19V it will output a maximum of 8amps which is fine for the laptop i have which is a Compaq NX9105.

I have measured the voltage coming out of the adapter and it's a fixed 19V, I've also measured the voltage once connected to the motherboard at various stages of the board and there's power going through the components but it just doesn't switch on.

I was wondering if anybody has had experience with multi adapters and whether they just don't work on some laptops? as what i'm, thinking is eventhough the voltage is correct it might not be supplying the correct amps to the board and therefore the laptop is not powering up at all, i'm not even getting a light come on at the front to say that it's plugged in.
0
Comment
Question by:kreeyon
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
7 Comments
 
LVL 31

Accepted Solution

by:
rid earned 500 total points
ID: 22844717
Laptops have a voltage notice (19 V in your case) and a current rating on a label (often underneath). If the power supply has a current rating that is equal to or greater than the rating of the laptop, all is well; the laptop can take as much as it needs. If the current rating of the power supply is less than the current rating of the laptop, you're in trouble. The voltage MUST match.

There are some laptops that seem to complain about being fed from a non-brand power brick, but that seems to be an O/S thing; if the unit is not switched on, it shouldn't really notice. You may have a problem with the charging circuitry or the "power conditioning" circuitry inside the laptop.

Does the battery charge?
Can the unit run on battery only?
/RID


0
 

Author Comment

by:kreeyon
ID: 22844799
It wont work on battery as the battery was run completely down so there's no power left in the battery at the moment and the battery wont charge as nothing happens when the adapter is plugged in.

Don't really want to waste money on a new adapter if it's the laptop that's faulty, but just don't know.
0
 
LVL 31

Expert Comment

by:rid
ID: 22844934
And the unit doesn't work on AC with battery removed?
/RID
0
 

Author Comment

by:kreeyon
ID: 22845011
No not on AC at all.  I've measured various components across the board and there's voltage going through but nothing happens.
0

Featured Post

Enroll in June's Course of the Month

June's Course of the Month is now available! Every 10 seconds, a consumer gets hit with ransomware. Refresh your knowledge of ransomware best practices by enrolling in this month's complimentary course for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

pc, laptop  monitor connection configurations
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface. Change Cu…

696 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question