CGX mount DEC motor

I just got the celestron CGX mount and after setting it up I found that the DEC motor is only turning one way. When I press up on the controller it goes one way, but when I press down on the controller it pauses, then goes the same direction in pulses. It appears that as of now it will not go the other direction; not sure why it starts pulsing the other way though. Any thoughts as to what I can do? Celestron customer service won't open until tuesday and this is my last day in the mountains so if I could get it working for tonight that would be awesome. Thanks!