hi, I have a 2016 allmtn Haibike with Yamaha motor that had been working fine , I have just tried to use it for first time in two months and it won't power on . I have charged the battery ,changed the battery in handlebar console ,even tried a different console also checked all connections . but still nothing happens when I try to power on .thinking maybe handlebar switch ? anyone come across this fault , before I make a 60 mile journey to where I baught it from .not even sure if it's still in warranty as over a year old and has been used constantly in bad weather and off road for a year .thanks lee