I have the same problem with my analog discovery 2. I bought it used and it has a written note that says that the "switch is burned". When connected to a laptop it says that the PPL is not locked.
I read on this post
that the IC20 might be burnt. Is the IC20 the "switch"?
If so, how can I obtain this component to replace it? Would the by-pass method be a safe option to do?
Thanks