EDU09 doesn't work


#1

Insertion and soldering terminals are in order. By the connection of the USB plug the PC brings the announcement „USB device not recognized“. The red Power-LED shines.
IC3 has in Pin 1 3.3 V lie close. Bases IC3 are absent the Pins 15,16.17 and 18. Is there for it a reason?


#2

Problem is solved. It were absent not Pin 15, 16, 17 and 18, but Pin 11, 12, 13 and 14. I was able to do the Sockets afterwards to used ones.


#3

I’m sorry for the inconvenience.
Very strange defect in the IC socket indeed.
Glad you resolved the issue.