Older 67 card readers and 65 card readers

[James Linder]

I replaced the 4270 ohm resistor with a new 6190 ohm and now the motor pulls the cards through much quicker, about the same speed as a brand new 67 did back in 1977.

I ended up having to change out the motor itself because it developed the noise of dry bearings after repeated card reader testing. Although it read and wrote to cards without any errors I will not sell a restored calculator that sounds like that to one of my customers. It would be just a matter of time that the bearings galled and would yield error messages from cards not pulling through at a steady, repeatable speed.