do you live near NJ,USA?
maybe I could meet you and bring a working rasp pi 3 and a working psu and working cables.
if I plug it all in and it works you know the issue is the psu or one of your cables.
If I plug it all in and it does not work then the issue is your power outlets.
BTW I would not mine on a gfc outlet.
I could also bring a dmm to test the power.
only works if you are close
Yeah I would drive to NJ. That's awesome of you to offer to a new member like me.
I am working with a friend on this and he has the equipment. If we don't get this resolved tomorrow, I will send you a pm