Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lost Power. Failed. Will Not Buy Another

Initially I gave this product five stars. It worked well for about 150 grinds. Then it stopped altogether. No obvious cause. Safety interlock switch OK. 120v input OK.Problem must be in the circuit card. We'll just go back to a cheap coffee grinder and avoid cost and hassle. No m ore Cuisinart products for us.