So after a bit more research on the forum, I took a chance and ordered the PCB repair kit:http://shop.ukwhitegoods.co.uk/Refriger ... r+Kit.html
Had a go at replacing just the largest capacitor and plugged everything back together.
Sparks off the circuit board, swopped back to the original capacitor, same thing.
ALso appeard that one of the three square white boxes clicked and sparked internally.
So.... have I just bricked the circuit board as this doesn't seem normal? Is my house about to burn down?
On a happy note, the fridge and freezer still seem to be working, no joy on the ice dispensor. Do I bite the bullet and replace the whole thing (http://shop.ukwhitegoods.co.uk/Refriger ... c+PCB.html
) for £150?