I have 2 HP 41cv units. I have not used either in a few years and the will not turn on. They worked fine when I last used them. I installed brand new batteries and checked for corosion on the contacts, but neither will power on. Any suggestions?????????


Perhaps one of the techniques to attempt to revive such units found here would do the trick.


If none of the steps listed before didn't work, you may have a trouble in the screws bases, on calculator's back.
Press the calculator (in the line of upper foot) against a table and try to turn it on.

As these calculators are old, the plastic under screws breaks and the back part can't press the battery/modules contact against the main board.

To really check this, remove the back foot and screws and open very carefully the calculator. Look at the plastic where the screws pass thru.

Good luck!

Possibly Related Threads...
Thread Author Replies Views Last Post
  HP 41CV Repairs William Mabotja 3 246 11-20-2013, 04:45 PM
Last Post: Mike Powell
  "Packing" syndrome of my HP-41CV PGILLET 12 584 11-03-2013, 02:46 PM
Last Post: Hans Holzach
  HP-41CV - A Walk Down Memory Lane Tom Lewis 9 422 03-18-2013, 11:14 PM
Last Post: BShoring
  HP-41CV power problem Don Davis 2 195 10-11-2012, 09:13 PM
Last Post: Don Davis
  HP-41CV layout vs Voyager's, 35s Ben Huntsman 17 693 09-17-2012, 05:30 PM
Last Post: Luiz C. Vieira (Brazil)
  HP-41CV System II aj04062 1 176 06-22-2012, 08:49 PM
Last Post: Allen
  HP-41CV "tall keys" version Ignacio Sánchez 16 630 06-11-2012, 04:59 AM
Last Post: Diego Díaz
  HP 41CV defective aurelio 7 313 05-16-2012, 03:54 AM
Last Post: Frank Boehm (Germany)
  HP-41CV dilemma Matt Agajanian 41 1,295 03-13-2012, 10:56 PM
Last Post: Luiz C. Vieira (Brazil)
  Defective HP-41CV for 41CL? Ernst Fueloep 3 155 12-13-2011, 12:57 AM
Last Post: Juergen Keller

Forum Jump: