HP-65 more on the card reader

[wallyt]

Doh! It's more sensible than me. Anyway, I think I am going to try using my variable DC supply and clip lead it to the unit. Starting about 4.5V I'm going to reduce it slowly and see exactly where the card reader starts to work reliably.

I just finished repairs on a second HP65 and it is working very well. I did not need to replace the clutch, just the gummy wheel. This unit works fine regardless of which battery pack I feed it. I do think, however, that the cards transport through the unit a little slower than the problem unit.