Volume button on Surface RT

[Desless]

Hi,

Tried to make a post via the Surface App, seems like it did not post.

I have a problem With the volume button. It can only turn volume Down, not up. Mechanical wise, it's working fine and make the click sound when pressing it.
But it just won't turn the volume up.

Guess I have to RMA the Device, but still want to check if anyone else have had this issue?

Thanks!