hp 82104A only reads 67/97 cards

[Raymond Del Tondo]

(08-28-2016 05:40 AM)John Garza (3665) Wrote:  Anyone seen this problem?
I repaired (new drive rollers) 2 of these units today. One went fine, the other won't read 41 cards (MALFUNCTION or CARD ERROR), but reads 67 cards fine (7P via VER). I've tried various axle settings and get good reads on 67 cards on about half the range - but nothing for 41 cards. I've tried cards written on the other card unit, and this one. Although the card write gave no error - I don't recall if it checks that during a write.

Did you also clean the magnetic head, and check all the wires?