Hi
I've a big trouble with my HP-67 display: two days ago it began to light on several segments as a "shadow". I mean, for instance: 0.00 is shown as 8.88, but not on all segments with the same brightness. It happens on the 'almost' every 15 digits (sign digits shows "-" dull).
The machine works fine (programming, calculating and storing run OK).
Would anyone bring me the two ICs display drivers pin out? May be the three current drivers were out at the same time? Is a bastard drain resistor guilty, or a dead capacitor? Perhaps the problem is there ... I don't know, really. What can I do?
Thanks in advance,
Albert