|full- and halfnuts|
Message #4 Posted by Vieira, Luiz C. (Brazil) on 29 Mar 2004, 5:41 a.m.,
in response to message #3 by Karl Schneider
Hello Karl, guys;
after wondering about the same question (Are there any HP41C build as halfnuts?) and exposing this subject sometime ago, I read that there were indeed some HP41C build as halfnuts mostly for replacement purposes (maybe some other purpose?). It seems to me it's a rare "piece", a true collectible.
I was given (a very good friend) an HP41CV halfnut that's faulty: it shows only the first 1/5 memory space, as it happens in an HP41C. It's memory "chips" (the hybrid under the LCD) are not reliable as well, because they tend to cnage their contents from time to time, i.e., programs stored in this calculator have their codes changed and barely work. I had an old, not-operative HP41C fullnut and I found out that the cases may be exchanged with a bit of extra work: after removing the keyboard, both full- and halfnut main PCB's fit each other's keyboard cases, but some plastic posts (rivets) must be removed (about eight, if I am not wrong). Now I have a fake/faulty HP41C halfnut! And that's neat!
Edited: 29 Mar 2004, 5:42 a.m.