Ground loop with carputer - not with my new laptop --- HELP!!!
So I've been dealing with a ground loop since December and I've just now gotten to figuring out just what is causing it.
My carputer is a laptop with both built in sound jack and an external usb sound card. I have the ground loop with both. I also have the ground loop with the power hooked up to the laptop and without. There is no change.
I've been reading about how everyone else has dealt with their ground loops and someone mentioned grounding the chassis of the laptop or grounding the external sound card.
To test this theory I tried hooking up my new laptop which I thought would probably be better grounded. Sure enough when I hooked my new laptop up it sounded great.
On a side note, I have a ground loop isolator as well. That helped with the ground loop a LOT.
So my question is how should I go about fixing the grounding issue with my carputer? Is grounding the motherboard and then using the built in jack the solution? Ground the external usb sound card and use that? Or something else? I'm open to any ideas.
I know there are a billion of these posts on the forums, I hope you guys won't mind helping me out with my individual issue!