Actually, yes, with the vibration happening when the button is pushed it means it is running. I bet the ribbon cable for the LCD screen is not making proper contact. The screen may have been replaced and the unit resold. It should have been verified as working before it was packed back up, however. I recently had this same issue with my Elitepad 1000 when I replaced my busticated screen with a used one myself. Until I got that ribbon cable aligned correctly to make the LCD work it was completely off with no feedback other than the 'buzz' when the power or Winders button was pushed. For a considerable amount of time I thought the used panel I picked up was broken but it turned out to be only the connection.