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Ground Q/A sticky

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Member - Posts: 2
Member spacespace
Joined: October 22, 2009
Location: Florida, United States
Posted: January 26, 2010 at 7:53 AM / IP Logged  
i almost give up. maybe someone has an idea what to do next?
have a carpc with M2ATC dc to dc power supply using a SILVERSTONE DAC
grounded pc chasis +m2atx + motherboard and even cover plate. no change still some static.
computer uses oversized wires and all ground run to the same point. (amp + pc)
using a ground loop isolator the high freq. static goes away (or at least is heavily reduced) but a lower frequency (id say about 15 hz) starts to appear.
the noise is clearly carried in the USB wire and it seems as the DAC is strongly affected by it. I also tried grounding the DAC board directly which resulted in even more noise!
im at the end of my knowledge if anyone has any ideas where to look next please let me know.
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