My tf201 was not charging suspected it was due too a warped dock/power socket
Device was not too difficult too open with safe pry tools had too unscrew alot of boards and the battery out of the unit too gain access too removing dock ribbon cable from main board. Fixed my problem prime charging again had too leave for an hour or so before it would boot from being completely drained.
Be careful when your using your safe pry tool too remove front off your prime. If you are not careful you may pull the glass up away from the lcd panel be sure uve got behind the lcd.