lrushton2 , Link's below is a disassembly guide and video, This will get you inside the flat iron to inspect for damaged/loose/burnt wires/components and enable you to possibly repair/replace switch. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. If not comfortable working with electronics perhaps have a good local small appliance shop have a look and estimate repair. Also link to a site where to send for repair and last link is for manufacturer which talks about warranty and fake Chi irons and you may be able to inquire about replacement parts,etc., if needed. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
http://joedotcom.com/2009/05/16/attempti...
https://www.youtube.com/watch?v=AqMs4LHE...
https://www.leaf.tv/articles/how-to-get-...
https://images-na.ssl-images-amazon.com/...
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