Speakers emit light during actions on the computer (opening / minimizing windows, right-clicking, etc.). What can be done?

Question

Iron

This happened when installing an external cheap ($10) audio card.
What could be the reason?

Answer 1

In an external cheap sound card, obviously, most likely you have wireless peripherals, so there are pickups, but there is no screen in cheap cards, and the cable is most likely not shielded. Stick speakers through a number or take a normal USB sound. You can, of course, wrap it with foil and ground it, but the video will be an amateur.

Answer 2

I completely agree that the problem is in the tips on the card, but in my opinion it will not be easy to solve the problem by shielding the card in fact. It's easier to either use the built-in one, or buy another, normal one, within 3k you can buy a very decent one (the price is approximate, you need to figure it out).

Answer 3

a very long time ago, when I was young and poor, I solved a similar problem by building a "faraday cage" around the sound card,
made it from a very thin copper mesh (the cell weaving is less than a millimeter),
bent the brackets from the parts of a children's aluminum designer and attached them to the board through the holes (for a long time I looked for "free" places in the textolite),
grounded directly to the PC case