On Thursday 08 December 2005 00:04, Brian Rudnicke wrote:
> Hi all. I've just moved in to a new home. In my old home, I had a
> computer in my entertainment center which had a cable that ran from
> the soundcard to the TAPE input on my Harmon/Kardon amp. It used to
> play MP3's through there just fine.
>
> Now that I've moved, whenever I connect anything computer related to
> any of the inputs, I get a humming sound comming from the speakers.
> It goes away when I take away the device. I've tried three different
> computers, and one with an external USB sound card. I can't get rid
> of the hum.
>
> Where can I present this problem (listservs?) and get help? Can
> anyone here help troubleshoot this issue?
>
> Thanks,
> Brian Rudnicke
The hum is probably from an earth loop or poor earth. You must make
sure that all the chassis of the various bits of equipment are at the
same potential. Ideally zero. Any slight difference will be fed into
the amp and cause the hummmmmm.
I would start with the computer earth, make sure that it is plugged into
the same outlet as the amplifier. If I recall you can reverse the plug
in the socket, you may find that the cure is as simple as that !!
HTH
--
Best Regards:
Derrick.
Pontefract Linux Users Group.
plug at play-net.co.uk
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