Login    Forum    Search    FAQ

Board index » Upgrading and Repairing Forum » Laptop Hardware




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: ungrounded power supply ok?
 Post Posted: Sun Aug 15, 2010 12:07 pm 
Offline

Joined: Sat Jun 30, 2007 10:36 am
Posts: 208
My new replacement OEM power adapter is not grounded. The old one was. The new one's AC-side plug also isn't polarized. The DC-side connector is apparently grounded, but not the AC side. Should I worry?

Continuity testing failed except within the AC cable. I tested continuity from each of the three holes on the distal DC receptacle to each of the two prongs on the brick's AC end and to the brick's case; all failed, so I assume the continuity tests themselves failed, but I don't know why. The tester works on itself. Only the AC cable itself passed continuity, and it did on both sides. The adapter has been working, but I can't test continuity while it's connected to power, so I'm puzzled. Maybe pumping AC in closes a circuit. The LED does take a while to brighten up and another while to dim down, but I don't know if that's a clue. I have no proof that power that may leak into the laptop's grounding path can ever get to the neutral prong of the distal AC plug.

That's my question on grounding.

Thanks.


Top 
 Profile  
Reply with quote  
 Post subject: Re: ungrounded power supply ok?
 Post Posted: Sun Aug 15, 2010 12:10 pm 
Offline

Joined: Thu Jan 15, 2009 1:27 pm
Posts: 1105
Location: Stowmarket, Suffolk England
What PSU is this?

Model numbers etc please!


Top 
 Profile  
Reply with quote  
 Post subject: Re: ungrounded power supply ok?
 Post Posted: Sun Aug 15, 2010 12:32 pm 
Offline
Site Admin

Joined: Sun Feb 04, 2007 11:44 am
Posts: 5880
Quote:
My new replacement OEM power adapter is not grounded. The old one was. The new one's AC-side plug also isn't polarized. The DC-side connector is apparently grounded, but not the AC side. Should I worry?

No, ungrounded (2-prong AC) adapters are standard for most laptops. Scott.


Top 
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
 
Post new topic Reply to topic  [ 3 posts ] 

Board index » Upgrading and Repairing Forum » Laptop Hardware


Who is online

Users browsing this forum: Google [Bot] and 1 guest

 
 

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron