HP-67 card reader and magnetic cards questions

[teenix]

Hi Alberto,

It may be the capacitors have degraded over time.

Is the sense chip staying cool to touch after being used a few times?

Intermittent behaviour could be caused by loose contacts connecting the two boards together.

Is the wiring sound, especially where they join the circuit board. Some of these are in small sockets which may have some corrosion on the wire ends.

cheers

Tony