gave my daughter my old A70. It was working fine. I reformatted the card in it. Now the screen doesn't work to take pictures. I put a different card in it and I can see the pictures in playback but in camera mode the screen is blank. Take a photo and get a blank pic. Any ideas what happened??? went through all the menus and I am at a loss. I did try the display button and it would just shut doen the menu items that were showing. It sill display function and menu items justnot what the lens is seeing.