DDJ-SB3 Left volume fader cuts in and out

The last 2 times ive used my controller my left volume fader has been causing me some issues, the volume doesnt really go up when I push it up but sometimes it will crack in and out... If I push the fader to the left or right it will sometimes cause the track to play at normal volume.  Just started doing it out of nowhere and the controller is only 6mths old.