I recently bought this unit on ebay. its works but the face plate however does not. i was just wondering if there was anyway i could do just somthing simple to fix the problem or if anyone has ever had the problem befor. cuz i really dont want to spend 215$ on just the faceplate. i also did hear that the 7700 was also compatable w/ the face of i belive the 7500 just wondering if that is true too. thanks!