HP 28S keypad issue-definitive repair solution

[rprosperi]

Yes, please do document it, and if possible, include links for buying the correct tiny bolts, etc.

Indeed, most folks have moved on past these, but as they age and continue to have problems, the need to make these repairs will continue.

It seems to me the hardest, or at most sensitive part is how to open the unit w/o causing too much damage so focus on this part is also important.