Replacing the guts of a A4000 keyboard...?

[Pertinax]

Hi all,

Have recently broken the F6 key on the keyboard of my A4000.  I do have a spare internal A1200 keyboard here.  Is it possible to swap the two (i.e. take the 4000 keyboard apart and put the 1200 keyboard into the case?) and save myself trying to find a new 4000 keyboard?

Thanks

Jason