I recently purchased a low use(100miles) ex demo Dirt E. I like the bike very much but out today the screen went blank and all assistance stopped. Various button pressing and battery in and out failed to fix it so I popped it back to the dealers(Pedal Power West Calder). The display had stopped working and was replaced there and then with a new one. So while I'm disappointed to have had a problem I'm very happy with the dealer back up