USB sound when i plug/unplug lamp or trimmer

[John_495]

Hi my pc and my lamp share one power source, when i plug the lamp i hear the usb sound! also with other devices. Is that a problem? Is it correct that my pc share one electric shocket strip with other home devices? thanks!

 

[nigelivey]

Sounds like an "earthing" or "grounding" issue.

 

[John_495]

so? is that bad? I nedd to do something?

 

[nigelivey]

Check to see if your wall socket has an earth pin or hole (depending on location) and that it has an earthwire attached to it in the wall