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Old 05-21-2008, 05:59 PM   #16
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Weird Noise in my Speakers..


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Originally Posted by darkecho View Post
I know what you mean about mac users and their hardware =)

I just find it strange that it wouldn't be laptop specific if the noise disappears when I use the 6 other laptops.

Just to clarify- I am connecting the laptop to a flatscreen computer monitor, not a TV. Everything is running off of the same powerstrip in the same room.

You still think its a ground loop even though the noise goes away when I swap the macbook out for one of 6 other laptops under the exact same circumstances?

Maybe its a ground loop, and the macbook just doesnt handle the noise as well as other brands of laptop?
You know, in my haste, I didn't notice that you were sucessful with other laptops. Still, for as easy as it'd be to test, I'd try the approach that I mentioned in my last post.

Good luck,

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Old 05-22-2008, 11:49 AM   #17
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Weird Noise in my Speakers..


Yes, lifting the ground to the screen (or whatever device I am using) stops the noise. Interestingly, I tried to get the noise by using an ungrounded speaker and couldn't reproduce it either.
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Old 05-22-2008, 11:51 AM   #18
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Weird Noise in my Speakers..


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Originally Posted by darkecho View Post
Yes, lifting the ground to the screen (or whatever device I am using) stops the noise. Interestingly, I tried to get the noise by using an ungrounded speaker and couldn't reproduce it either.
Glad to hear that we found the root of the problem!
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Old 05-22-2008, 12:51 PM   #19
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Weird Noise in my Speakers..


Okay- I still have a few questions, though..

A. If it's a ground loop why don't the other laptops expose the noise?

B. How do I eliminate the loop? I thought ground loops were avoidable if everything was plugged into the same power strip. I mean- everyone who uses a computer should have ground loop problems if they have speakers and a computer screen plugged into their computer- why don't more people experience this?

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