terr6941 0 Posted October 8, 2017 My SC Series vinyl cutter will not hold it speed. All of a sudden the speed started changing to 100 to as high as 800. I've only use this cutter to make a few personal tshirt and car signs. Has anyone had this problem and have an solution. The motherboard has changed. I've start my Tshirt business and have purchased another cutter but would love to have this one also working to use. This cutter is using surecut pro software. Quote c Share this post Link to post Share on other sites