HP41 Does on Turn on



#2

My HP41 calculator had been off for many years after the batteries ran out. The batteries were removed from the calculator. Recently, I placed new "N" cells in the calculator but it does not turn on (no display). Any idea what the problem may be? Is there another cell in the calculator?


#3

Do you see corrosion at the battery terminals? If yes, it may have wandered furtheron. Anyway, low resistance shining copper contacts are beneficial.

AFAIK there is no additional nor backup battery inside.


#4

I recently acquired an HP41cx that appeared to have the same problem, that is untill I decided to try a little additional pressure on the "ON" button, which brought it to life. You might carefully try this.
Best regards, Hal


#5

No such luck with pressure on the "ON" switch! I was wondering if there is some minimum state of charging of the circuits necessary before the calculator starts working. The circuits would have been fully discharged after a long period of non-use. Just getting in the dangerous zone of guessing....

#6

The battery contacts are squeaky clean. The old batteries were removed to prevent damage from leakage. Thanks for the reply.


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP Prime Save Power Turn Off Not Working Timothy Roche 12 848 10-27-2013, 01:41 PM
Last Post: Michael de Estrada
  HP Prime: Slow turn off Paul D. Fox 1 245 10-09-2013, 08:39 PM
Last Post: Tim Wessman
  Can't turn on HP 15C Laci 4 356 03-23-2012, 03:54 PM
Last Post: uhmgawa
  41CL - Shut Off that Auto-Turn Off Frido Bohn 17 988 12-22-2011, 03:39 AM
Last Post: Frido Bohn
  12c won't turn on --- options? Gene Wright 8 519 10-28-2011, 10:45 PM
Last Post: gene wright
  HP 11C suddenly won't turn on Antonio Petri (UK) 2 241 09-20-2011, 03:30 PM
Last Post: Antonio Petri (UK)
  Hp-28S Does not Turn On aj04062 10 585 09-19-2011, 08:15 AM
Last Post: Bart (UK)
  HP-41CVs will not turn on aj04062 2 221 05-15-2011, 01:30 PM
Last Post: Randy
  HP-32s doesn't turn on Giovanni Jimenez 4 317 06-27-2010, 11:04 PM
Last Post: Alexandre Penna
  HP-41 turn-on behavior Paolo Cipollone 13 736 01-11-2010, 06:45 AM
Last Post: Paolo Cipollone

Forum Jump: