YOU ARE A GREAT GUY!!! I did what you said and adjust the little screws on my card readers golden plate. I also change 2 capacitors; it was hard and i did a lot of dissambly - reassembly but now IT WORKS LIKE A NEW ONE WITH 100% of positive writing and reading!!!
I even have some tears when i saw my first "programs" writing corectly try after try after hours of frustrating job!!!
I was obsess by the card reader for some days. Even at works during breaks trying some new adjustments. My co-wrokers said that i'm a fool to work on that "dirty antiquity" or "obsolete hardware" HP-67. Me too i don't understand, i'm probably sick, if you analyse that, it's hard to understand, specially for a guy how have a TI-92 plus on his desk but always use a CX or a TI-59. How can they treat this beauty as a dirty-hugly hardware?!?
Anyway, i just want to Thank you for your Tips, they were helpful.
I have another question : I install 2 oring to replace the gummy wheel but one of them is always "spinning out" of the sharf and touch the reader casing : how can i "glue" them in place?
Another one : What is the purpose or the screw-notch at the end of the white plastic shaft that hold the reader wheel in place - Allignement of the wheel?
Thanks again!
Michel
Quebec