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seablade



Reged: 21/11/04
Posts: 3779
Re: What exactly IS that laptop noise, and how do I fix it?
      21/02/12 11:30 PM
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Quote Scatamonky:

This problem has recently reared its ugly head in my setup. But only through the monitors which run through a cheap Laney head. And only since I replaced the original Dell power supply with a cheap replacement item (not Dell) off eBay. Isn't there a device that goes on the plug end to kill the hum? I know you can run the signal from the laptop through a DI box, use the ground lift and then into the desk, but isn't that masking rather curing the hum?



No that is curing the hum. And lifting the AC ground is a BAD IDEA on any piece of equipment. Isolating the audio ground is both safer and the correct way to solve this if it is indeed a ground loop.

Seablade

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Subject Posted by Posted on
* What exactly IS that laptop noise, and how do I fix it? lewk 23/01/12 09:40 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Chaconne   23/02/12 03:24 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Chaconne   23/02/12 03:16 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   23/02/12 10:32 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Mike Stranks   23/02/12 10:24 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Guy Johnson   22/02/12 08:02 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Scatamonky   21/02/12 10:17 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? seablade   21/02/12 11:30 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Scatamonky   22/02/12 12:11 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   22/02/12 11:49 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? MarkOne   24/01/12 02:23 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   24/01/12 03:42 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Martin WalkerModerator   02/02/12 08:16 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? shufflebeat   23/01/12 02:49 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   23/01/12 04:17 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Sheriton   23/01/12 02:25 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Steve A   23/01/12 12:21 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   23/01/12 11:44 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? lewk   23/01/12 11:50 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   23/01/12 12:18 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? infiniteloop   23/01/12 11:32 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? lewk   23/01/12 11:39 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? infiniteloop   23/01/12 11:51 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? Steve A   23/01/12 11:58 AM
. * Re: What exactly IS that laptop noise, and how do I fix it? infiniteloop   23/01/12 12:01 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   23/01/12 12:15 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? MonkeySpank   23/02/12 03:43 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? chris...   22/02/12 12:23 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? chris...   22/02/12 10:31 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? infiniteloop   23/01/12 12:31 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Hugh RobjohnsAdministrator   23/01/12 12:43 PM
. * Re: What exactly IS that laptop noise, and how do I fix it? Steve A   23/01/12 11:00 AM

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