HP-41CV without serial number!



#2

I acquired a non-working HP-41CV last month for parts to fix my other 41CV (leaked display).
The most interesting thing is that it hasn't the serial number engraved on the back! The reserved space is there, untouched, clean and... blank!
It appears to be older than mine (2214B03932, Brazil) and is made in USA. Is fullnut and the CPU board has a different layout and the front lower plate where is printed the name the letters are printed in bright reflective golden ink. The brazilian one is printed on a more "brownish" ink and not reflective.

This calc was toasted! I had to replace the CPU and display boards with my old 41CV. The display chips has the epoxy melted! What can cause this? Wrong batteries? (those of 12V x 4?)

Any information will be welcome.

Nelson


#3

Hi,

I can't say anything about the electrical problems of your calc, but about the nonexistent serial number.

Those 'virginal' cases were used for replacement units by HP,
and could be ordered from HP by companies which made custom accessories.

For example, I once worked for a company in Germany where HP-41 cardreader housings w/o serial numbers were used as containers for RAMBoxes (Guess the name;-)


Raymond

BTW: I also have a new and empty HP-41 housing w/o serial number


#4

Thanks for the help!

Best regards

Nelson

#5

It is most likely a service replacement unit. These were supposed to have the old serial number hand engraved in them, but many times the service tech got lazy...


Possibly Related Threads...
Thread Author Replies Views Last Post
  DIY HP 30b WP 34s serial flash/programming cable Richard Wahl 2 260 12-04-2013, 11:14 AM
Last Post: Barry Mead
  A fast Bernoulli Number method for the HP Prime Namir 16 703 11-22-2013, 04:46 PM
Last Post: Namir
  HP 41CV Repairs William Mabotja 3 244 11-20-2013, 04:45 PM
Last Post: Mike Powell
  [HP Prime] Calculating Prandtl Number with Units (bug found in USIMPLIFY) Timothy Roche 1 166 11-13-2013, 04:07 PM
Last Post: cyrille de Brébisson
  HP Prime: Converting number to Sci notation and back BruceTTT 1 172 11-12-2013, 02:11 AM
Last Post: Phil Wipf
  HP PRIME: Fixed 4 number format 0.001000 Joseph Ec 18 783 11-07-2013, 11:51 AM
Last Post: Geoff Quickfall
  "Packing" syndrome of my HP-41CV PGILLET 12 583 11-03-2013, 02:46 PM
Last Post: Hans Holzach
  HP Prime: Number of external Variables Davi Ribeiro de Oliveira 0 126 11-01-2013, 08:10 PM
Last Post: Davi Ribeiro de Oliveira
  HP PRIME: command to read the SERIAL ? Joseph Ec 9 650 11-01-2013, 12:43 AM
Last Post: Joe Horn
  Oldest HP 41c aka earliest Serial Number Gene Wright 23 876 09-05-2013, 03:45 AM
Last Post: Geoff Quickfall

Forum Jump: