Fast Speed way ledger pro scooter

I got this scooter from my sisters husband who never had issues with it ,and was working fine and the first day I rode it headed to work and I was going down hill fast and ran over a little Rock then the screen starting blinking for like 5 seconds and turned off and I ended up buying a new scooter and this one been sitting , I have to just close up the spot where I was checking if the main power line got power witch it does , also when I plug it in too charge it just blinks red . So I know its definitely not a hard fix for someone who knows . Am asking jist 180