Non clicky HP41 key

[ElectroDuende]

Hi,

I'm restoring a Tall keys 41C. Initially it only had one problem; a badly corroded flex circuit, buth thanks to Diego that has a remedy.

Next problem is in the keys... [1] and [2] barely click although they register properly; but [3] doesn't click at all, and even miss some keystroke from time to time. Rest of the keyboard functions wonderfully.

I have seen over ebay people selling the domes but it seems that reaching the front part of the PCB to replace them is quite a destructive process, and I don't feel confident about this... Even the removal of the logic board scares me a bit, as its the old type, held in place by two golden nuts on the screw posts, and I fear to wear the external thread of the posts.

As Geoff's book seem not to be available yet... any recommendations?

Also... is there any way to reach under the LCD protector to clean the dust, that doesn't imply to desolder it? I'm quite skilled with the soldering iron, but you know, "if it works, don't tocuh it"!

Thanks in advance!