Hello, My wifi unit has recently started to make an unbearable noise, kind of like our old dial up modems did. Please help. I leave the video link below: https://youtu.be/KZahQVBXuwI

Powerline Adapter TL-WPA4220 began making a high-pitched noise and drops the internet connection. I have tried unplugging, changing outlets, etc. to no avail. This single adapter has been paired with