My set was working fine Saturday morning. Last night when we turn it on nothing happened. No, lights, no buzz, just like it was unplugged. Power to set checked out okay. Two issues here that concern which may have caused the problem. 1. I vacuumed screen. 2. I disconnected cable TV from an A/B switch at a cable box located in the living room. Could either of these caused the the TV fail? Is there a reset button on this set, which I could try. Thanks, this is such a good brand, we actually have replaced two other TV's with Curtis Mathis. Hope you can fix us up with a solution.