Quote:
you could ruin your display board by pulling up traces as you try to remove the old encoder.


Not necessarily so . We repaired an MK2 board with all pads ripped off the board and it works fine. The repair is expensive and a bit ugly though.

Also, please note that Mouser does not sell an exact replacement for an MK2A encoder. They either have a fuller travel on the push button, fewer detents (courser feel), or fit a little more tightly than the original. That said the selection from Mouser is probably the best choice. If anyone wants to order 2000 of them, you can get an exact replacement from them.

Good luck,
Stu
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If you want it to break, buy Sony!