That's why tech support has moved on to "unplug the thing, wait a minute, then plug it back in".

It gives the capacitors to discharge; but more importantly, it gives an excuse to actually force the person to plug the thing in.

I ask people to unplug their Ethernet cable and tell me the colors they see on the wires all the time.

I don't care, of course. But they'll happily do that, where if I ask them to verify if the cable is properly plugged in, 99% of them will just say yes without so much as glancing in the cables' direction.