My Iphone allways worked well on the Fidelio DS1200 but all at once is doesn't work at all. It doesn't charge, it gives no sign, nothing. The same Iphone works well on another dockingstation and an Ipod works well on the Fidelio. Also the extra charger/output on the backside of the Fidelio works well. I allready re-installed the App but nothing changed. Can you give me advice.