Asus laptop sound problem , help ?

[Andor71]

Hello.

I have an Asus Strix g731gt laptop and I suspect, that the sound card has a problem. After owning it for 2 months it started giving out a minimal amount of Coil Whine and the speaker gives out a crackling noise at higher sound levels. On top of that, when a headset is plugged into the combojack I can sometimes hear popping sounds. It still has warranty so I sent it back, according to the seller one of the speakers was busted so they replaced it and then claimed the problem was solved. After using it for another week the speaker vibrates lightly at high volume levels and the popping sounds in the headset are still not fixed, people I talk to on skype and discord can hear it too. The popping sound is random. I wish to identify the true problem before sanding it back once again , because they won't do it themselves and would charge me for sending it to them again.

There is a link with videos about the problem : https://drive.google.com/drive/folders/1gsLwBbQopxbgAjxSnIk6eZ6h-kU80avT?usp=sharing

I am looking for any help i can get.

[DoctorNick]

Ello, is the problem occurring when using laptop on battery or only when using on charger? Is the charger grounded?

[Andor71]

Hey , when I unplug the laptop charger, the Coil Whine is different , it's quiter but gets a different tone. The popping sound is still there. The charger is grounded.