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#1
31st May 2009, 09:23
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Hi guys,
I have a problem which is really bugging me. I have an 'Asus G50V' with Vista Home Premium. It's a great laptop but the in-built speakers are rubbish and far far too quiet. So, I plug in my, rather complicated, external speaker system. This is a 'Soundraft Compact 4 Mixing desk' connected to a 'Arcam A65 Amp' with 4 various, high end speakers. There is nothing wrong with any of these components nor the wires that I use to connect everything together. However, When I plug in anything to a USB port on my laptop I get a background fuzzy sound. If the usb is connected to something powered, for example my printer its a rather annoying hissing, popping and crackling pretty much completely random. I wonder if anyone could tell me the problem here, whats going wrong, is it my soundcard? Bare in mind that this is a fairly new laptop, months old still under warranty. Thanks! |
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#2
31st May 2009, 10:19
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probably a weak earth point... usb's are earthed to the case in a desktop as its metal but a laptop case is plastic.. if it was me i would solder a wire from the usb's negative or outer case of the usb to the earth point
 i had this exact problem on my desktop and that fixed my problem. also if you can try turning down the volume on your laptop then turn the volume up on your speaker system your plugged into it if you can. that might not give the crackling sound as bad. oviusly opening the laptop might void your warrantly something to bear in mind if you do this
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#3
31st May 2009, 14:53
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I imagine that if you unplug your laptop from the mains, the noise goes? If so, you need to get a 'Ground Loop Isolator', these are almost always designed for cars, to stop ignition interference into your headunit.
Also, your best off turning your laptop up as high as it goes, so as to limit the amplification of any background noise from your system, which the main culprit is the Hard drive, though ive known wireless to interfere too, but that is obvious, sounds slightly like morse code. Also, petes suggestion will probably help, if not solve the issue, however my solution doesnt involve taking apart your laptop, and soldering its board :-P |
