While I'm not trying to be fresh, lets go through the motions...
1) Be sure that it is plugged into a known good outlet (test with a lamp for example)
2) Are there any lights on the unit at all? Usually there is a standby light (red) that glows when the unit is plugged in but off.
3) Does the red light mentioned in #2 go off but no other action?
Please update the posting with a response to the above and further assistance will follow.
In the worse case, the power supply portion of the player will require service which may cost around $50 or so with parts.