Buzzing noise from speakers

[MadMarc]

I have built a HTPC and it works great so far, but when I want to lister music over the speakers (Canton Speaker over an Onkyo receiver, connected to the HTPC over a cinch cable) there comes a buzzing noise from the speakers, especially when I stop the music or the movie.
When I use our TV's speaker over a HDMI cable there is no buzzing noise. I have also tried different inputs on the receiver and I've connected my iPhone to the same input as the HTPC without getting the buzzing noise.

Has anyone an idea how I could fix that, thanks in advance!

 

[Tomtom565]

Its not grounded, one of these normally fixes it... http://www.amazon.co.uk/hq-CAR-NF01...sr_1_sc_1?ie=UTF8&qid=1342950802&sr=8-1-spell Maybe not that exact one, as you are Swiss, so try to get one from a national audio supplier...

 

[MadMarc]

Its not grounded, one of these normally fixes it... http://www.amazon.co.uk/hq-CAR-NF01...sr_1_sc_1?ie=UTF8&qid=1342950802&sr=8-1-spell Maybe not that exact one, as you are Swiss, so try to get one from a national audio supplier...

Thank you I'll give it a try

 

[BaMb1N0]

Hi MadMarc

Same here. PC at Onkyo Receiver with Canton Speakers. It's what Tomtom565 said. I'm using a Toslink optical cable now. Problem solved.

Best Regards
BaMb1N0 vo Obwalde

 

[MadMarc]

Hi MadMarc

Same here. PC at Onkyo Receiver with Canton Speakers. It's what Tomtom565 said. I'm using a Toslink optical cable now. Problem solved.

Best Regards
BaMb1N0 vo Obwalde

I'm now waiting for the Ground Loop Isolator to arrive, guess it would have been easier and cheaper to use a Toslink cable, but I didn't think of that.

Best Regards back, en gruess zrugg us em züri underland, en schöne 1. August, happy birthday Switzerland!

 

[MadMarc]

Its not grounded, one of these normally fixes it... http://www.amazon.co.uk/hq-CAR-NF01...sr_1_sc_1?ie=UTF8&qid=1342950802&sr=8-1-spell Maybe not that exact one, as you are Swiss, so try to get one from a national audio supplier...

Thank you again for this idea, the ground loop insulator has arrived today it's fix my problem!

 

[Tomtom565]

Thank you againg for this idea, the ground loop insulator has arrived today it's fix my problem!

No problem Glad to see it worked