Wow Paul! How'd you know I was a Star Trek fan.... Loved it!
If the MicroChip was to be placed and soldered to the board by the company making the boards for you (I think that's what the post stated), then if there is a socket for the chip you would not have to redesign the board. But, if it is not in a PLCC package, it would probably be a PITA!
Unless you do something careless to the control board, IC's are pretty reliable these days. So you may never have to replace it.
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