If the printer is shutting itself off after 2 seconds, I would check the manual and see if there is a way to reset it to factory defaults. You could call Epson support and ask if there is a way to reset it, or if they've heard of the problem where the printer shuts off after a couple seconds.
Just guessing from the symptoms at what could be causing it, but I'd say it could be a problem with the power supply/cable or a software problem. If it isn't, it could be that one of the main motors has died and it can no longer do a self check when it starts up. It could also be caused by failure of your low voltage or high voltage boards.
Also, check that the waste container is empty.