Blank screen The camera is working fine but the screen is blank

You can open the camera and check to see if the LCD ribbon cable is still connected to the main board. If it was dropped they can become dislodged. There are two cables the smaller one is the most sensitive to coming loose. When disconnecting and reconnecting the ribbon cables, make sure you are careful while lifting the tabs that hold the ribbon cables in place they are hinged and will lift up and the ribbon cable will slide out. Note the large ribbon cable feeds through the camera to the front main board. Hope this helps