Оригинальный сообщение: James Sommers ,
Thomas, I would guess that it's a bad cable. I would try a replacement from a different supplier. Or send the one you have back and see if you'll get a replacement. I doubt it's the logic board. I would unplug the cable and then plug it back in and test. '''''Look at the contacts on the connector, see if there are any signs of damage.''''' That's my best advice. You'll have to do some troubleshooting from here. I hope that helps you some!