Just before I put the bike up for the winter I hit a rather large bump in the road. My touchscreen on my radio turned bright white and then went blank. The audio still worked but I could not see anything on the screen. Every now and then the screen would come back on and then go blank again. When I put it up for the winter the screen was working but now it is not working. I have checked connections and all seem solid, pulled the fuses and they are all fine. Any ideas?