Talking HP-34c


I recently purchased what seems to ba a talking hp-34c. It's a device that was built by a company called "Science for the blind", founded in the UK by Tom Benham in the seventies.

It's an hp-34c which is attached to a black box containing a speech synthesis processor and a small speaker. There is a stripe of wires coming out of the back of the hp-34c that goes into this black box. The power switch on the hp was removed, I assume that the power switch on the black box does also power on the hp. Unfortunately the hp-34c does not power up, I only hear some cracking noise coming out of the speaker. The black box seems to be working but not the hp.

Does anyone have technical details about this calculator and can help me repair it ? with some luck someone that worked on this project is reading this board ?

Thanks a lot.

Possibly Related Threads…
Thread Author Replies Views Last Post
  HP-34C Draining battery quickly Bill Crowell 2 1,350 09-08-2013, 08:30 AM
Last Post: aj04062
  HP-34C Curiosity Matt Agajanian 7 2,667 08-23-2013, 06:02 PM
Last Post: Stephan Matthys
  HP-34C Emulator BShoring 8 2,660 03-30-2013, 05:04 PM
Last Post: BShoring
  Looking for PRNG for HP-34C Dave Boyd 3 1,559 09-22-2012, 07:10 PM
Last Post: Mike T.
  HP-34C Storage Register Arithmetic & Programming Matt Agajanian 14 4,108 05-08-2012, 11:04 AM
Last Post: Matt Agajanian
  A longstanding HP-34C mystery Matt Agajanian 11 3,414 05-03-2012, 02:29 AM
Last Post: Alexander Oestert
  HP 34C display problem james summers 11 3,915 04-05-2012, 06:07 PM
Last Post: james summers
  HP 34C and 67 for Android Vincent Weber 16 4,496 01-24-2012, 11:38 AM
Last Post: Alexander Oestert
  Talking to HP David Griffith 29 6,827 11-15-2011, 05:46 PM
Last Post: Jim Yohe
  By the way, talking about bugs... Miguel Toro 2 1,138 09-01-2011, 03:19 PM
Last Post: Miguel Toro

Forum Jump: