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Interferance through laptop power supply
https://mail.karaokescenemagazine.net/forums/viewtopic.php?f=1&t=16457		 Page 1 of 2
Author:  tattoo99 [ Tue Apr 21, 2009 8:59 am ]
Post subject:  Interferance through laptop power supply
Having bad interferance through the amp coming from the power supply to the laptop this goes when unplugged and used on battery tried in line box from comp to speaker input on amp but to no avail
Any Help !!!
Author:  Lonman [ Tue Apr 21, 2009 10:23 am ]
Post subject:  Re: Interferance through laptop power supply
Get a ground lift for the latop.
Author:  tattoo99 [ Tue Apr 21, 2009 10:27 am ]
Post subject:  Re: Interferance through laptop power supply
Ground lift ??
Author:  Michaelangelo1 [ Tue Apr 21, 2009 11:57 am ]
Post subject:  Re: Interferance through laptop power supply
This has been covered in numerous posts previously. In the future, please search prior to creating a new thread.

Get a very cheap adapter from any home supply store or wal-mart. The kind that take your 3 plug AC adapter and turn it into 2 plugs to plug into the wall. They take out the ground. They cost about $1 each.

Put this on your laptop power cord and you should fix the problem.
Author:  ripman8 [ Tue Apr 21, 2009 6:19 pm ]
Post subject:  Re: Interferance through laptop power supply
What's the big deal with another thread on this? You don't have to answer it Mich. But since you brought it up, how do you search for a particular subject?
Author:  Michaelangelo1 [ Wed Apr 22, 2009 2:18 am ]
Post subject:  Re: Interferance through laptop power supply
On the left side, in the black "Member Area" section, you choose search.

You can search for keyword(s) or author. When you put in your search term(s), you go down to the bottom of the page and click "search".

It searches both in subject line and throughout the text. It will highlight all matching terms.
Author:  ripman8 [ Wed Apr 22, 2009 8:39 am ]
Post subject:  Re: Interferance through laptop power supply
Thanks Mich.
Author:  tattoo99 [ Wed Apr 22, 2009 11:17 am ]
Post subject:  Re: Interferance through laptop power supply
could try that but the adapters here are for europe or the us style pin offset on angle

never mind i'm sure i will solve it in the end
Author:  Lonman [ Wed Apr 22, 2009 11:34 am ]
Post subject:  Re: Interferance through laptop power supply
If you can't find the power cord adapter you can always get an inline filter from the laptop to the amp source.
http://www.zzounds.com/item--EBTHE2PKG - this one I know works
http://www.zzounds.com/item--BEHHD400 - cheap knockoff of above, don't know quality or results.
Author:  MorganLeFey [ Wed Apr 22, 2009 1:23 pm ]
Post subject:  Re: Interferance through laptop power supply
Michaelangelo1 @ Wed Apr 22, 2009 7:57 am wrote:
This has been covered in numerous posts previously. In the future, please search prior to creating a new thread.

Get a very cheap adapter from any home supply store or wal-mart. The kind that take your 3 plug AC adapter and turn it into 2 plugs to plug into the wall. They take out the ground. They cost about $1 each.

Put this on your laptop power cord and you should fix the problem.


wow are grooming ourselves to be a moderator? :lol:
Author:  Wiggly Dave [ Wed Apr 22, 2009 3:12 pm ]
Post subject:  Re: Interferance through laptop power supply
The Euro term is "Ground earth isolator"....it runs between laptop and mixer.
On another subject I feel Newbies shouldn't be preached to. They asked us for help. They didnt know the subject had been covered.
Author:  Michaelangelo1 [ Wed Apr 22, 2009 3:28 pm ]
Post subject:  Re: Interferance through laptop power supply
Quote:
wow are grooming ourselves to be a moderator? :lol:


No moreso than those who get angry at the blatant selling of cell phones and other crap on this forum.

I guess I am the only one who gets tired of seeing the same old posts over and over again by those that don't bother to research their own info first. Those who want instant answers and don't want to be bothered with research.

Call me old fashioned.
Author:  ripman8 [ Wed Apr 22, 2009 6:32 pm ]
Post subject:  Re: Interferance through laptop power supply
Someone using this forum to sell non karaoke stuff, maybe even karaoke stuff is different than a newbie asking for help. Besides, if you see the title and it is something that will make you roll your eyes and say "not again". Just skip over it. This is a great forum and before I stumbled onto it, learning about the karaoke business and "real" audio equipment was a crapshoot at best. I plan on continuing to learn from everyone.
Author:  BamaRob [ Wed Apr 22, 2009 7:35 pm ]
Post subject:  Re: Interferance through laptop power supply
IMHO What difference does it make how many times its been covered? Just because you've seen it a thousand times, doesnt mean someone else has seen it even once. Certainly not a newb.

Plus, if they're a newb, they probably didn't know to search first anyway.
Author:  MorganLeFey [ Wed Apr 22, 2009 9:29 pm ]
Post subject:  Re: Interferance through laptop power supply
Michaelangelo1 @ Thu Apr 23, 2009 11:28 am wrote:
Quote:
wow are grooming ourselves to be a moderator? :lol:


No moreso than those who get angry at the blatant selling of cell phones and other crap on this forum.

I guess I am the only one who gets tired of seeing the same old posts over and over again by those that don't bother to research their own info first. Those who want instant answers and don't want to be bothered with research.

Call me old fashioned.


as you can see, someone asked how to search for a topic...that would indicate that it is not exactly easy to find. Actually I take back what I initially said to you, cos I have NEVER seen a mod here behave in such an ignorant way to a newbie
Author:  tattoo99 [ Wed Apr 22, 2009 11:34 pm ]
Post subject:  Re: Interferance through laptop power supply
Thanks for all your welcome coments and tips the isolator that i am currently using is this one

http://www.audio-depot.com/images/ART%20DTI.jpg

but seem to get the same problem maybe i'll cut off the plug and rewire a fresh one without the earth this may solve the problem !!!!!
Author:  gunghouk [ Thu Apr 23, 2009 12:44 am ]
Post subject:  Re: Interferance through laptop power supply
That's what I did. Cut off the moulded plug and rewire without the ground wire. Just make sure the earth is cut well back and insulated if possible. Works perfectly.
Author:  MorganLeFey [ Thu Apr 23, 2009 1:57 am ]
Post subject:  Re: Interferance through laptop power supply
yeah I got mine cut off too...cos no matter what I did I still got the noise...here in nz they wont sell you the isolators that you guys are able to obtain...its illegal...so is cutting off the 3rd pin...so spank me
Author:  tattoo99 [ Thu Apr 23, 2009 10:42 am ]
Post subject:  Re: Interferance through laptop power supply
Thanks for all advice Boys, I cut off the earth wire inside a new plug, ITS DONE THE TRICK WORKS LIKE A DREAM !!

ONCE AGAIN THANKS BOYS!!!
Author:  MorganLeFey [ Thu Apr 23, 2009 10:47 am ]
Post subject:  Re: Interferance through laptop power supply
hmmm yeah thanks boys
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