Power on failure BBB

Greetings, i have one issue with my BBB. When i plug power in mini USB or with 2 Ampers 5 Volts power adapter BBB lights up and it works. But, when i turn it off, i can not turn it back on immediately, no matter what i do (hold power button, or reinserting power cable). I can power it up about two or three hours latter, when i left it without power. I assume because i think that processor gives power to the board it somehow wont do it. But i do not understand how it is working after i left it without power for a while ?

Thank you.

Same response as your earlier message.

request an RMA.

Gerald