Dug out an old Uno board to use for a prototype I am working on. Wanting to power it with a DIY'd benchtop PSU however the DC power isn't working, and I am not sure how to trouble shoot it.
Powered by USB all is fine, and thinking back I do recall this being the case. I think at some point I may have plugged both USB and DC power in at the same time.
So, question is, where do I start looking for how to rectify this issue? I am not worried about replacing the dc jack of anything as this board is likely to be hardwired into a powersource long term.
Any advice is welcomed.