HP 71b soft case decomposing...


i have a problem with my hp71b soft case. The internal side of the soft case produce a lot of (rubber?) powder. Do you know if there is a way to restore or just stop this phenomena?

I was trying to show you a couple of pictures but no way to do it (for me).




I had the same problem with several HP-71B cases. I just put them in the clothes washer with detergent and then air dried them. It was a great success.



this is normal for certain production runs of these cases.

Just put the case into hand warm water in which you dissolved some washing powder before.

Let the case stay the one or other hour, and then rinse out the dark water:-)

You'll se most of the granulate is one.




thank you very much for your answers.

wow! A lot of black powder came out from the soft case. Now i am waiting it dries...

thank again


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP Prime Tutorial #4 is up (CASE/CHOOSE/INPUT) Eddie W. Shore 1 1,019 11-15-2013, 07:32 AM
Last Post: Davi Ribeiro de Oliveira
  Leather case for the HP-Prime Karl-Ludwig Butte 9 3,267 10-19-2013, 06:08 PM
Last Post: Eddie W. Shore
  Serious discussion regarding soft menus Tim Wessman 24 4,199 10-06-2013, 07:23 PM
Last Post: Helge Gabert
  [HP-Prime] Lack of user soft keys Andy B (Australia) 1 869 08-17-2013, 11:00 AM
Last Post: Tim Wessman
  HP-50G belt clip case Dan Lewis 6 1,742 04-17-2013, 10:51 AM
  HP 39gii: CASE Syntax Eddie W. Shore 3 1,232 02-20-2013, 03:58 PM
Last Post: Eddie W. Shore
  Silver paint for HP 35 case Anoop Sahal 2 1,129 12-26-2012, 10:17 AM
Last Post: Anoop Sahal
  HP calc case thermoplastic types Duane Hess 2 1,117 11-25-2012, 10:50 PM
Last Post: Paul Berger (Canada)
  Found HP 65 with clear see thru case davefr 24 5,044 11-13-2012, 10:41 AM
Last Post: Bruce Larrabee
  HP 11C/12C/15C/16C case Philippe Cairic 4 1,693 11-06-2012, 06:04 PM
Last Post: Matt Agajanian

Forum Jump: