Why does my New Balance 1500 treadmill turn on and shut right off?

I was running on my New Balance 1500 treadmill and when I went to turn down the speed, I got shocked. At first it was like it froze up and just stayed on the speed I was at and then after a few minutes it just shut off. When I say shcoked I mean as in the way when you walk on carpet and then touch someone, that shock. I went through the manual and did everything they suggested, called New Balance (still waiting for a call back), left unplugged for a whole day and nothing works. When you first plug it in, the light comes on but then the machine just shuts right off. It's like it ins't connecting in the deck part, the area where you press power and speed and all that. Can anyone help me, please.