Did this yesterday and can confirm it works 100%
just be carfull removing screws, I replaced my screws with a fatter headed brass screw.

[ame="http://vimeo.com/20432681"]NanoPad Fix on Vimeo[/ame]

My problem with my nano pad was the pads 1 to 6 used to play up, pad 4 triggerd different pads depending on how I pressed it, something else I did was add a layer of folded paper under the grey metal case to apply preasure to the contacts hope it works as I know many of these were faulty right out of the factory and korg didnt like refunding. So try it out if like me you had a dead nanopad sitting around with nothing to loose, now I have to buy a new usb hub though