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Is anyone here using onboard audio?, Computer audio (Analog out)
ChronoSphere
post Jun 12 2013, 20:48
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QUOTE (Arnold B. Krueger @ Jun 12 2013, 13:02) *
I can often find the source of grounding problems by means of visual inspection, but so far this one has eluded me.
Curious, how do you identify grounding problems? What do I have to look for?
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Arnold B. Kruege...
post Jun 13 2013, 01:35
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QUOTE (ChronoSphere @ Jun 12 2013, 15:48) *
QUOTE (Arnold B. Krueger @ Jun 12 2013, 13:02) *
I can often find the source of grounding problems by means of visual inspection, but so far this one has eluded me.
Curious, how do you identify grounding problems? What do I have to look for?


Grounding problems give you background noise that follow the general activity level on the machine.
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ChronoSphere
post Jun 13 2013, 13:49
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Yes, I know that, I meant which visual cues can I look for to identify the source?
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uart
post Jun 13 2013, 16:58
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QUOTE (ChronoSphere @ Jun 13 2013, 05:49) *
Yes, I know that, I meant which visual cues can I look for to identify the source?


A couple of simple things to look for. Make sure the audio "ground" (more correctly called common) is not shared with the front USB port and is not grounded to the metal case. The only currents that should return (through the audio common wire to the audio header), is the net return current of the headphones themselves.

This post has been edited by uart: Jun 13 2013, 17:00
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Arnold B. Kruege...
post Jun 14 2013, 06:10
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QUOTE (ChronoSphere @ Jun 13 2013, 08:49) *
Yes, I know that, I meant which visual cues can I look for to identify the source?


I wish I knew!

I don't see a lot of difference between the case that seems to have poor grounding, and the ones that don't.

The offending case is quite a bit older then the ones that work well.
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