HP-67 <-->TI-59 card reader repair
#1

No i'm not gonna ask if i can read my HP cards on my TI calculator's reader... :-)

So my HP-67 card reader is great since you helped me! thanks again! I also have a TI-59 and a TI-SR-52 that have the same gummy/desintegrate wheel problem. So my question is can i use the same o-rings to repair my TI calculators that i use with my HP-67.

I know, i just have to try it, but probably someone has experiment that repair and have some tips for me...

Thanks
Michel Beaulieu

#2

Good luck, but I fear you'll be disappointed. The TI 59 card reader was vastly inferior in quality compared to the HP card reader. TI wouldn't even promise that a card writtent by one TI 59 would be readable by another.

I was the unfortunate owner of a TI 59 back in 1979 and I had enormous trouble getting the card reader to work reliably. Eventually I returned it for a refund (it was still within the one year warranty period).

So after 20+ years, getting a TI card reader to work would be just short of a miracle.

**vp

#3

The TI readers can be repaired... I've never done it. Check RSKEY.ORG or DATAMATH.ORG I seem to remember seeing a link to a TI reader repair page (or one soon to come).

#4

Actually, I've repaired many many 59 card readers. Not too tricky. The SR-52's are much harder, but also can be done. Briefly, I unsolder and removed the motor assemblies, glue a rubber plumbing washer to the shaft, power the motor externally to spin the washer, and then use a dremel grinding wheel to grind to the perfect size. Can take a little trial and error, but since the cards can be inserted and tested without the reader in the calc, it's not too difficult. Mine come out quite reliable; at least as good as new.

I hope nobody minds me posting this here... a lot of us collectors collect TI's, too, if for no other reason but to have the machines that competed with the HP.



Possibly Related Threads…
Thread Author Replies Views Last Post
  Reasonable price for a 41C, Quad Mem, Time, Navigation and Card reader module? Eelco Rouw 10 4,631 12-12-2013, 01:52 AM
Last Post: Eelco Rouw
  hp-67 card reader problem. Marcel Samek 5 3,153 12-09-2013, 09:09 PM
Last Post: Paul Berger (Canada)
  HP Prime vs TI : Factoring ? HP Pioneer 7 2,336 10-29-2013, 02:00 PM
Last Post: CompSystems
  HP-67 keyboard repair davorin 1 1,154 10-04-2013, 04:09 AM
Last Post: Katie Wasserman
  HP-97 card reader pinch roller axle davorin 2 1,577 09-15-2013, 08:47 AM
Last Post: aj04062
  HP-97 Card Reader davorin 3 1,858 09-13-2013, 04:21 PM
Last Post: Stephan Matthys
  OT TI-59 for the iPhone Matt Agajanian 10 2,820 09-04-2013, 08:57 AM
Last Post: Eddie W. Shore
  HP-67 Card Reader Repair Question aj04062 1 1,483 08-08-2013, 11:15 AM
Last Post: Randy
  Hp-67 card reader: tantalum capacitor identification Ignacio Sánchez 8 3,175 06-02-2013, 07:26 PM
Last Post: aj04062
  Testing card reader motor for 65 Michae Altmann 2 1,599 03-17-2013, 09:24 PM
Last Post: Randy

Forum Jump: