How to cancel hum from a laptop headphone jack?

Question

when i use my HP laptop for DJ purposes, i recieve a low hum. When i use other brands of laptops, i do not. what has caused this and how can i resolve the hum noise? thanks

Answer 1

Check if your mic is muted - sometimes you can get some pickup from the microphone.
Also make sure there are no other items enabled you don't need in the sound manager.
If your headphones are Ok in other notebooks then they should be OK.
There is always a risk of hum if there is a wire looped close to a high frequency item or I've seen it if the notebook has been worked on and a cable is pinched or trapped.
Might be worth looking at USB headset if you still get the issue ? Mine have a full DSP processor built in and are a lot cleaner in sound than the original headphones I used to have.

Answer 2

On laptops it truly is soldered onto the motherboard immediately. till you're solid with a soldering iron and keen to pull your computing device aside you're greater useful off procuring a usb sound card extremely. The plastic bezels you should pull to get entry to the motherboard on maximum laptops would become broken or scratched once you pull it aside your self. I secure a link so which you will see what one sounds like, you will desire to purchase it greater good fee on ebay.