I yesterday bought A13 and I still can't run it. I asked the question here and still no answer. https://www.olimex.com/forum/index.php?topic=4838.0 (https://www.olimex.com/forum/index.php?topic=4838.0) There is nothing in manual. Please, HELP ME!!!
Did you email support?
If not, do.
BTW it's nearly always a power problem.
John