Anmelden:     

Forum: General Discussion

Topic: AC Power

Dieses Thema ist veraltet und kann veraltete oder falsche Informationen enthalten.

Hi All

I am back with a new laptop I get a hum when I use the ac power and the line out on my laptop , but there is no hum when ac power is not used. Is there a fix for this? Other then
not useing the ac power.

Thanks All
 
geposted Sat 17 Jan 04 @ 3:50 am
is it a 3 prong plug?
Use a 2 prong adapter if so...

using an external hard drive?

 
What usb devices are plugged in also ? I got a bad hum from my cable modem through usb.
 
I will try the 2 prong adapter. Yes I use a external hard drive but it does the same with it or not.The only other usb device is my mouse.
 
DJ Rick

The 2 prong adapter worked thanks. Do you know y this is?
 
It's a grounding issue.
 
@audio000

The problem is called a "ground loop" and is caused by the power supply circuit design of the new laptop. I had the same issue with my new laptop which was the same HP brand as my previous laptop which never had the problem.

Here is the solution : http://www.xitel.com/product_gli.htm

I don't think it's a good idea to run on 2 prong without proper ground.
 
Thanks for the "solution" ;-)

I use the same filter "homemade" by a friend, and it's the best !

Coyote
 
digijoc-Mele

I will try this to , it looks like this would help with someother
things to. Thank you
 
hi coyote, can you tell us more details about the "home made" solution?
 


(Alte Themen und Foren werden automatisch geschlossen)