Last week I received 4 EmonTH units. I had no trouble setting up 3 of them, but the first one I setup does not seem to work. When I put in the batteries (new) the LED does not light up. I changed batteries and tested the batteries to be certain.
I live in Canada so shipping back a forth a replacement seems like a last resort if there are other things for me to try first. I have experience programming ESPs and arduinos, but I don’t feel comfortable messing with it too much as it seems to be dead on arrival. Maybe someone has some suggestions?