HP-65 goes on hold after reading a card

[[kby]]

I will say that one other thing I recently was reminded of (think I read it somewherelong ago, but just encountered it) is that a missing (or presumably open)
Capacitor across the card reader motor can cause read failures.

[additional information for completeness: this problem turns out to have been caused by something on the CPU board, and is therefore likely the card reader controller part of the hybrid chip]