Hi;
The LogicDart, as mentioned here and in another thread, was designed by Tony Duell with the HP41 in mind, right? Tony, will it be also useful for other applications, basically Hewlett-Packard calculators maintenance? I have three HP calculators still in the medical bay (1 HP15C that no longer switches to ON, 1 HP55 with bad contact in both ON/OFF and PRGM/TIMER/RUN sliding keys and recently an HP11C with a cracked LCD) and I'd like to know if the LogicDart can be built with commercial components. Is it possible to disclose this sort of information? If not, it's completely understandable. I'd just like to know.
Two questions: a few months ago, one of our contributors mentioned a chemical product that would help removing the aluminum bezels (it would dissolve the glue) present in some calculators. Does anybody remember which product was that?
The other question is about the lubricating grease used in the sliding keys of the old calculators. It seems the grease used in these keys has, at least, three major functions: extend metal-base parts by reducing rubbing action, protecting against chemical reactions and improving electric conductivity. Which grease is that? I believe the major cause of the bad contact in the HP55 sliding keys is because of this: no grease at all (previous owner "cleaned that dirt paste").
Thank you for any help.