bishop815

hello all. I have a 04 Nissan maxima got it a week ago. the display for the center dash was not in the car I got one from a site and installed it and got nothing. I checked all fuses they are all fine. the radio work heat/ac works. but get nothing on the display. took it all apart and check connectors they are all fine. the nav dvd player ejects the cd and beeps when car is turned on. if anyone has any tips let me know please thanks