Greetings all. This is my first time using this website so please forgive me if I don't do something right. Just recently pulled out my Nikon f3 and put a new roll of film in it. The only thing is, when I press the illuminator button for the LCD screen, the shutter speeds that are being indicated disappear but the illuminator stays on. Has anyone ever experienced this issue before? If so can you please explain why this is happening and how I can resolve this issue. Thanks in advance.