Google is your friend :-)
It is Bourns PEC164215FN0024 Vertical Mount.
Mouser:
652-PEC16-4215FN0024
Before buying the new one just consider cleaning the old one. It"s easy and it works, I did it with my Pro2000 and the result is perfect. You can found info about and videos on the net easily.
Good luck!
Daniel Forro
On Oct 26, 2016, at 12:16 AM, bezowinz@... [xl7] wrote:
�Anyone know where I can find a replacement rotary knob?
Thanks!