The touchscreen on my DX80 stopped working. I read in a forum that you can disconnect the touchscreen and use a keyboard and mouse with it so removed the back and then disconnected the 4 ribbon cables (one at a time, checking each time to see if I had mouse support) but no luck. I left them disconnected and reassembled it, but still no mouse. What options do I have? What else can I try? Seems like such a waste to scrap this whole device because the touchscreen stopped working and I can't believe that it doesn't have native keyboard and mouse support.