Help repairing HP67 (gummy card reader) in Sydney Australia



I have an HP-67 that has the "gummy" card reader problem.
Being a computer programmer by trade, I am very dangerous with a soldering iron!
(just using that as an example)
I was wondering if any of you knew of anyone down under who could repair this fine old machine, or help me repair it?

Greg Harris
Sydney Australia


You can probably ask John Robinson.
Email :

He might be able to help.


The best solution I've found is to disassemble the card reader, remove the drive wheel (with attached gear) and scrape off all the gunk that used to be the rubber drive roller. Then use an xacto knife to slice off a replacement roller from a length of rubber tubing used for model airplane fuel line. This new roller then press fits onto the now clean axle. Reassemble, and voila!. I've done this successfuly on 4 HP67s, 2 HP65s, and 3 HP97s.


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 3,031 12-12-2013, 01:52 AM
Last Post: Eelco Rouw
  hp-67 card reader problem. Marcel Samek 5 2,053 12-09-2013, 09:09 PM
Last Post: Paul Berger (Canada)
  HP67 eBay auction Cristian Arezzini 3 1,299 12-08-2013, 03:47 PM
Last Post: Raymond Del Tondo
  HP67/97 M.E. Pac cover Ignacio Sánchez 2 962 11-22-2013, 04:04 AM
Last Post: Ignacio Sánchez Reig
  HP-97 card reader pinch roller axle davorin 2 1,098 09-15-2013, 08:47 AM
Last Post: aj04062
  HP-97 Card Reader davorin 3 1,204 09-13-2013, 04:21 PM
Last Post: Stephan Matthys
  HP-67 Card Reader Repair Question aj04062 1 998 08-08-2013, 11:15 AM
Last Post: Randy
  Hp-67 card reader: tantalum capacitor identification Ignacio Sánchez 8 2,240 06-02-2013, 07:26 PM
Last Post: aj04062
  Testing card reader motor for 65 Michae Altmann 2 1,092 03-17-2013, 09:24 PM
Last Post: Randy
  Repairing HP 65 Michae Altmann 5 1,400 03-15-2013, 04:13 AM
Last Post: Joel Setton (France)

Forum Jump: