Faradave
Member
So I bought this cheap ThinkPad t420 to use as an amp Sim. I guess I assumed every computer came with an audio in 3.5 mm Jack. This one did not so I had to buy a USB audio in. It also has headphones out. Well, this works for my purposes but there's some kind of grounding issue because it produces a loud buzz. I was only able to play for about 45 minutes, the lifespan of my battery because the buzz is some sort of grounding Loop issue. I'm aware of ground Loop isolators, but those cost money.
Even with the laptop unplugged, I had to use headphones because when I plug in my Amplified PC speakers which are plugged into my power mains, here comes the buzz again.
The only solution I could find was to take an unused power cable with a ground prong and plug it in, then touch the ground wire to anywhere on the chassis of my laptop.
What a rapture to be rid of that horrible Buzz but still I'm greedy and I want more.
That solved the issue fine and dandy but I don't like having this plug I got to plug in every time I want to play.
Can I assume that it would be bad to touch that ground to the negative or positive wire? You know what as I type out that sentence I realized what a bad idea that would be. Never mind. I was thinking I could just run a very short cable from the neighbouring outlet's ground to the negative of the outlet that is powering my laptop, but that's dumb that'd pop my breakers, right? Well what would you guys suggest? IF YOURE SO SMART! jklol
The only solution I can think of is to just have an extra plug for ground and then tape that cable to my laptop power cable so that its as if I only have one cable to screw with but then I still have to take that ground cable and touch it to somewhere on the chassis. I've been wrapping the wire around a USB plug and plugging it in. There's gotta be a better way....
I sure do appreciate yall's help!
Even with the laptop unplugged, I had to use headphones because when I plug in my Amplified PC speakers which are plugged into my power mains, here comes the buzz again.
The only solution I could find was to take an unused power cable with a ground prong and plug it in, then touch the ground wire to anywhere on the chassis of my laptop.
What a rapture to be rid of that horrible Buzz but still I'm greedy and I want more.
That solved the issue fine and dandy but I don't like having this plug I got to plug in every time I want to play.
Can I assume that it would be bad to touch that ground to the negative or positive wire? You know what as I type out that sentence I realized what a bad idea that would be. Never mind. I was thinking I could just run a very short cable from the neighbouring outlet's ground to the negative of the outlet that is powering my laptop, but that's dumb that'd pop my breakers, right? Well what would you guys suggest? IF YOURE SO SMART! jklol
The only solution I can think of is to just have an extra plug for ground and then tape that cable to my laptop power cable so that its as if I only have one cable to screw with but then I still have to take that ground cable and touch it to somewhere on the chassis. I've been wrapping the wire around a USB plug and plugging it in. There's gotta be a better way....
I sure do appreciate yall's help!