Finally found a solution Folks!
N.B. If your Pad is still under warranty then this will void the warranty!
(See
https/www.youtube.com/watch?v=aV3q-rMeGVw for the method that I adapted)
1. Remove the back of the Pad
2. CAREFULLY de-solder BOTH the battery leads taking care to bend them upwards and don't let them touch each other or the circuit board
3. Leave the Pad unpowered for a period of time (I left mine for approx 3hrs)
4. CAREFULLY re-solder the battery leads
5. Power up
6. Connect your pad to your notebook/PC and transfer any files you want to keep.
7. Disconnect pad from your notebook/PC
8. Reset pad to defaults
9. Enjoy!
Whilst this may not work for everyone my Pad is back to it's out of the box happy self!
The irony being that my darling wife had bought me a replacement pad the day before I tried this and I'd already used it!
Murphy's damn law strikes again!