My HP-12c seems to be dead....



#11

Good morning everybody,

This morning my belowed HP-12c (Singapore 3347S04420) is not responding to the ON button. I took out the 3 batteries and put them in again, but it is still not working. Yesterday it was OK and the batteries are almost new. I know that it hasn't a great value and that it is still sold, but I love THIS ONE !

I kindly ask you suggestions....

Thanking you in advance,

Best regards,

Luca


#12

Take the batteries out and shunt the two connectors together with a paper clip. Then try reinstalling the batteries and hit the ON switch.

Sucess!


#13

Thank you for the reply !

I tried, but it didn't work.

Other suggestions ?

BTW, I immediately ordered a new HP-12C, and while waiting I will use my dear old HP-41C writing some financial programs in order to transform it in a financial calculator. At least I will do some exercise !

Best regards,

Luca


#14

Luca,
HP manual suggests shorting battery terminals *while the batteries are in the calculator*.

Also, you may try exchanging batteries, even if the current ones are new. I would try that before buying a new 12c - China units are not as good as your Singapore unit.

There are some financial programs for 41 here:

http://www.hpmuseum.org/software/41td/fincalc.htm

Ciao

Renato


#15

Grazie mille, Massimo ! (Many thanks)

I have done what was written in the manual, now I will try new batteries as per your suggestion but anyway I want a spare unit (even a Chinese one).

I was in the middle of a financial meeting when the calculator died and I borroved a stupid algebric one from a collegue: now I know that I cannot work without RPN !

I am not an engineer but trust me that RPN works better also for marketing and financial people !

Thank you so much also for the link, it is very nice to see how kind and helpful is the people you find in this site !

Best regards,

Ciao

Luca


#16

I apologize....there are few with an Italian name and nevertheless I made a mistake...... I am suffering for my HP-12C.....

Luca


#17

Besides, may I suggest you buy a used 12C instead of a new chinese unit. There are Singapore and Malaysia units around, and I bet they will last longer than most new chinese ones. You can even get lucky, and find a Brazilian or American one.

I´ve been in Italy in mid-90s, at Falconara Maritima, working on a telecom manufacturer. Nice country - Brazil has a large number of Italian origin people, and has inherited some features.

Ciao

Renato


#18

Obrigado muito muito !

Ciao

Luca

#19

Many thanks, Renato !

I did as you suggested, also with new batteries, and it didn't work, but after cleaning the contacts and doing it again few days later, it is working again now !!!

I agree with you about the China made units, I bought one as a back-up but the feeling is not the same as my old one !

Thank you again,

Ciao

Luca


#20

Ciao Luca !
I´m happy you got your 12c working again.
I was not surprised you succeded. There have been many horror stories - cars passing over, hypopotamus digestion, etc., and the 12c survived.

I also have seen some cases where a battery change turns up to a non-working calculator. I´ve seen this on 11c, 42S, 32SII and 41CV. Patience, some knowledge and persistance makes a necessary and effective solution.


Possibly Related Threads...
Thread Author Replies Views Last Post
  Previously dead WP 34S is resurrected! JayV 2 339 04-18-2013, 12:41 AM
Last Post: Walter B
  Does anyone want dead 82001 battery packs? Michae Altmann 6 556 03-15-2013, 07:32 PM
Last Post: Harald
  Dead 50g after 3 months Chris Smith 13 889 03-13-2013, 12:28 PM
Last Post: chris smith
  More or less dead HP-67 Bernd Ulmann (Germany) 7 572 02-09-2013, 12:53 PM
Last Post: Ignazio Cara (Italy)
  HP-29c keyboard dead 2nd row problem Xavier A. (Brazil) 6 562 07-17-2012, 07:09 AM
Last Post: Xavier A. (Brazil)
  WP 34S and 'dead' HP20B Rob Willett 17 1,191 10-20-2011, 06:49 PM
Last Post: Egan Ford
  hp-12c from HP.com arrives with dead batteries Masaki Adachi 4 460 09-30-2011, 05:25 PM
Last Post: Masaki Adachi
  The calculator is dead - viva la HP 15C Limited Edition Joerg Woerner 38 2,175 09-04-2011, 08:44 AM
Last Post: hpnut
  HP 12C, 12C Platinum & 15C iOS App Walter Lam 2 340 06-02-2011, 01:25 PM
Last Post: Andrés C. Rodríguez (Argentina)
  offtopic: is HPCALC.ORG dead? x34 2 270 03-15-2011, 06:44 PM
Last Post: DeboT

Forum Jump: