Why won't my Black & Decker Power Pro ll work?!

  1. I bought a used,but, very new Black & Decker Power Pro ll Food Processor. I plugged it in at the store and it worked! When I get home It won't come on. I worked with it til I seen this tiny button above the power buttons. I push it and it works! It looks like a reset button, but ,it would be nice if I can fix this so the buttons control it cause theres one speed when I do this. Has anyone had this problem and how did you fix it ?
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