Does the CompuCarve have an internal fuse? I ordered my machine online, it arrived yesterday. I was able to turn it on and obtain serial #, etc… last night. Today, it will not power up. We tested the plug, polarity, cover (we can hear the sensor click when closing). We called Sears, who in turn gave us a number for CarveWright; after 30 minutes on hold (and their closing time approaching), I figured I would post to see if there is anything I can do. Thanks