HP-41C serial number - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: HP-41C serial number (/thread-25535.html) |
HP-41C serial number - Guillermo Castarés - 12-29-2002 Hi: Today I got an HP-41C.
1) The serial number is "1720A01115". How is this possible? 17+1960=1977, two years before release date? 2) The keys are more "square shaped" than the keys on my HP-41CV or 41CX. I suppose this is common to all HP-41C. or it doesn´t?
Regards Should not be possible - Gene - 12-29-2002 You're correct. A S/N of 1720 would date from the time of the HP-67, not the 41c. Either...the S/N has been altered or you've somehow misread it. :-) My early model has a S/N of 1932A...
Try typing 49 STO 01
What happens on the display? Re: HP-41C serial number - db (martinez, ca.) - 12-29-2002 my c also has the tall, more box-like keys.
Re: Should not be possible - Guillermo Castarés - 12-29-2002 The result of the sequence of keys that you told is "NONEXISTENT". What that it means?
I just write a html page with photos in my site, where you can see the S/N: The serial number seems to be "hand made", instead of "typed" as the ones in my other calculators.
Guillermo.
Re: Should not be possible - Gene - 12-29-2002 Hi. It does look like a previous owner etched the S/N onto the back of the calculator. Brings up an interesting question...why wasn't there a S/N there already? Doesn't seem like it was there to me, unless the person who etched the S/N onto the 41c did it right over the original. The series of key presses I gave you allows a very early 41c with a bug called "bug 3" to set the system flag for the low battery indicator. This is not normally possible on a 41c, but these early ones could do it in the way I described.
Good looking 41c, regardless! :-)
Re: Should not be possible - Renato - 12-29-2002 Guillermo, Re: HP-41C serial number - David Smith - 12-30-2002 The unit is a warranty repair replaement unit. These had blank serial number areas that were filled in by hand with the original unit number. Obviously somebody copied the old number incorrectly.
Re: Should not be possible - Guillermo Castarés - 01-09-2003 Renato you were right! The plastic frame were mounted upside down. I opened the calc, inverted the frame, and mounted all together again. Now it looks as supposed.
Saludos, Re: HP-41C serial number - Chris(FLA) - 01-09-2003 FWIW 2025A0XXXX Is the serial number. My tall key 41C that I bought originaly has the serial number. 2051A0XXXX So it is somewhat obvious by the serial number sequence and the keys that the first one is a serviced unit.
Chris
Re: HP-41C serial number - Lars Johansson - 01-09-2003 I also have a 41C with serial number beginning with
--Lars
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