HP-55 odd behavior revisted
#1

Thanks to everyone who contributed responses to my original post. The consensus seemed to be a bad ROM. Special thanks to Michael de Estrada, who furnished a "donor" HP-55 at modest cost. Swapped out the logic board, now all is well!



Possibly Related Threads…
Thread Author Replies Views Last Post
  HP PRIME : strange behavior when trying user key capability Damien 12 3,803 11-03-2013, 11:02 AM
Last Post: Joe Horn
  Prime formatting behavior Camille 0 843 09-28-2013, 05:37 PM
Last Post: Camille
  HP 55 Olivier De Smet 8 2,579 08-26-2013, 04:54 PM
Last Post: Matt Agajanian
  wp-34s (Inconsistent Behavior) Barry Mead 2 1,304 07-23-2013, 02:54 AM
Last Post: Marcus von Cube, Germany
  Update of Emu48 to v1.55 Christoph Giesselink 4 1,876 05-26-2013, 05:28 PM
Last Post: Andrew Nikitin
  HP-41C Tall Keys Strange ON Behavior aj04062 3 1,656 12-02-2012, 06:49 AM
Last Post: aj04062
  Weird behavior from lithium AAs Dave Britten 4 1,559 11-14-2012, 06:22 PM
Last Post: Lars Bergström
  HP15C strange complex number behavior Mike W 5 1,952 09-11-2012, 04:36 PM
Last Post: Mike W
  Celebrating the HP-55 my first HP Calculator Namir 6 1,924 08-25-2012, 02:00 PM
Last Post: Thomas Radtke
  OT--APF Mark 55 Question Matt Agajanian 6 2,303 07-19-2012, 10:51 PM
Last Post: Matt Agajanian

Forum Jump: