I’m a nooby who built a Pi Grrl Zero, and it was working fine. I could plug my mini keyboard dongle into the USB data port and it worked. Then I plugged in an audio adapter. That was a mistake! The screen went blank and when I unplugged the adapter the Pi rebooted. After that, the port stopped working. Running
lsusb shows the system is not seeing the port anymore.
I figure I may have burnt something out, but despite my research I can’t determine how to use the test pads under the port to check for continuity. I can’t get to the top of the Pi without disassembling the entire device.
Any ideas on how or if I can restore the USB port?