Hi all, Just as a reference for those wishing to dismantle the A2 remote I have a few pics below of the points to look for. I started by removing battery covers then remove the two small screws in the battery bay (Left side as you look at the keyboard) I used a small flat bladed screw driver carefully pushing inward on the right hand side on the remote end then left and right on the sides and work your way down. It is tight so will require a bit of work to open but you can do it. Hopefully without permanent damage. As mentioned previously try and return if still under warranty but mine is well out of that period now so I thought what the hell. I have cleaned the contacts on mine but personally until I try it I dont think its going to work but I was up for the challenge anyway. The new A3 that I have now with my U9 is awesome though !!