Multimedia keys Blackwidow elite

When using the multimedia volume wheel (which is located in the upper right part), the sound periodically changes in different directions. That is, I twist it by lowering the volume, and at first it raises a little, slightly lowers it. Also, sometimes when playing audio, the music just stops.

 

Try to clean it with compressed air, maybe some dust is causing this behaviour.

 

Do I need to disassemble this place or just direct compressed air into the hole between the key and the body?

 

First try without disassembling it, but it wouldn't be as effective as on disassembled keyboard.

 

I actually made my somewhat-functional Deathadder's scroll wheel button completely not work after spraying it with compressed air.
Not doubting your suggestion's effectiveness, but I don't believe dust from a normal environment should cause this issue.

 

Thanks for the help. It worked.