"Keith Marshall" wrote in message
om...
| But I was still suspicous. I fix electrical/electronic stuff for a
| living, and have seen lots of pots measure OK but still fail in use
| due to "dead spots" in their range of motion. Particularly with these
| sort of position feedback pots that tend to spend much of their lives
| moving through only a small percentage of their range.
|
| You probably know this but I'll point it out just in case.... if you're
| using a digital meter you'll most likely miss a noisy or burned pot
because
| a digital meter updates periodically rather than continuously.
|
| An analog meter checks continuously and you'll see the needle jump all
over
| the place if the pot is noisy and you'll see it jump at burned or dead
spots
| too.
|
| Best Regards,
| Keith Marshall
|

A 9V or less battery across the end terminals and a scope on the wiper
will turn up _everything_ that you can imagine. You have to sorta turn down
your standards for pots that have seen some use, because you're essentially
pushing some carbon dust around, so if you have it on AC mode you'll see the
noise clearly.