Weird 28S keyboard on Anniversary model



#6

I bought a 100th Anniversary edition of the 28S a few years ago - mint physical condition but the bottom row of keys on the alpha keyboard didn't work. So I just bought another from TAS thinking that this one would be fine (laws of probability would surely work in my favour ...), but it's got EXACTLY the same problem!!

Now I have about 7 other 28S's as well as 3 x 28C's and a few 18C's and 19B's in my collection and have never come across this before. Has anyone else had this issue? Was there a batch quality control issue with the limited edition version? Very strange. Keith.


#7

Quote:
(laws of probability would surely work in my favour ...),
...
Now I have about 7 other 28S's as well as 3 x 28C's and a few 18C's and 19B's

The laws of probability are working against you. Conclusion: too many clamshells. [;-)

#8

And still not enough Clamshells for good statistics ;-).


#9

Actually it's proof of Murphy's Law.

#10

Quote:
Has anyone else had this issue? Was there a batch quality control issue with the limited edition version? Very strange. Keith.

For whatever it is worth my 100 Year American Mathematics 1888-1988 HP-28S serial number 2801A04702 does NOT have a problem with the bottom row of the alpa keyboard.

Possibly Related Threads...
Thread Author Replies Views Last Post
  HP-42S celebrates its 25th anniversary today!!! Yriarte 7 849 10-31-2013, 05:56 PM
Last Post: Massimo Gnerucci (Italy)
  HP-97 Service Manual, newer model davorin 6 796 09-16-2013, 10:45 AM
Last Post: davorin
  hp50g screen weird line Sok-khieng Chum Hun 2 489 09-10-2013, 08:11 AM
Last Post: Sok-khieng Chum Hun
  weird statistics bug in wp34s Andrew Nikitin 5 745 06-20-2013, 01:54 PM
Last Post: Namir
  Riemann's Zeta Function (HP-28S) Gerson W. Barbosa 8 830 02-03-2013, 03:23 PM
Last Post: Gerson W. Barbosa
  3D Model - HP 50g 49G+ 39G+ 48Gii JJB299 3 527 01-18-2013, 11:51 PM
Last Post: Raymond Del Tondo
  HP12C Limited Edition 30 anniversary keyboard Revan Ng 0 316 01-11-2013, 12:49 AM
Last Post: Revan Ng
  HP41 model type Steve Hunt 11 942 11-28-2012, 11:47 AM
Last Post: Monte Dalrymple
  Weird behavior from lithium AAs Dave Britten 4 499 11-14-2012, 06:22 PM
Last Post: Lars Bergström
  28S Pi Functionality Matt Fegenbush 3 495 10-17-2012, 02:15 AM
Last Post: Nick_S

Forum Jump: