Thanks Skybeaux, any chance you can sell me these chips as I would rather try changing these out first then trying to find someone here kalgoorlie to change socket out (I presume its soldered)

I don't think IC27 and IC24 are socketed from the factory so you would probably have to desolder/resolder these anyway.

Some of the original Williams factory chip sockets are notorious for failing, particularly the "Scanbe" brand of sockets, so I would still be inclined to check this first.