HI, JColvin,
I've used the Discovery2 previously, never with a power supply though, always connected to a USB 3 port on my MacBook Pro, on a Thinkpad (Linux), and most recently on a Raspberry Pi 4. It was previously suggested that my USB cable is "too weak", and since I may have lost the original one, I bought two replacements from Digilent. But to no avail.
I didn't open the Discovery2, but I can see through the back cover, IC20 is physically intact, no crater (doesn't mean it's not blown).
What's the meaning of Unkown (sic) Scope chip id 0x9C? I've had this issue since day one, the PLL lock is a new issue.
What should I do? Send the unit back for repair?
Regards,
-david