Hey tetsuo,
thanks for your help - after putting the board into another phone it turned out to be the battery!
Despite the water damage the phone worked a treat!
I just have one now that doesn't connect with the computer. It charges in computer / in wall charger etc and I can put it into DFU easily it just doesn't prompt windows...
Tried different connector docks/ USB wires etc..
Help!
Thanks again
neil