Kev,
It may be that the centre differential pinion(Side) gear/s and/or a cross shaft has broken, this will give NO drive, but may slightly load up one of the outputs, IE front shaft, slightly while the remaining bits are partially engaged. I would drop the bottom cover and see what comes out...:(
I can help with spares for this if you like, I have quite a few in bits if you need a donation to the LT230 fund!:D:D
Feel free to PM away...
JC

