Ground loop problem?

Jeffrey530 · Jan 20, 2014

I have a stereo amplifier and speakers connected to my TV. I also have cable, a Roku player and my pc connected to the TV. I get a hum only when I use the pc-to TV connection. Should I be buying a ground loop isolator just for the 1/8 inch audio cable connecting the pc to the TV?

leeb2013 · Jan 21, 2014

do you get a hum when you connect your amp directly to your PC?

Jeffrey530 · Jan 21, 2014

leeb2013 :

I haven't tried. They are in different rooms and I just have a 25 ft 1/8th in pc audio cable connecting the pc to the tv.

makkem · Jan 21, 2014

Hi
It could be a ground loop or it could be an unshielded cable .
I had the same problem with a very similar length 1/8" cable that caused hum and it turned out to be unshielded and it was meant to be used as a speaker cable not an audio cable.
i replaced it with a shielded cable and solved the problem,no more hum.

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Ground loop problem?

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