|By 'blank' do you mean the screen is dark as if the camera is off or is it illuminated but shows nothing? If it's dark, is it maybe just really dim? I did a google search and those were some of the variations on that problem:|
Is the battery in good condition and fully charged?
It doesn't seem like a camera setting would cause that but you should check your manual. Other than the battery or a setting it sounds like a hardware problem that wouldn't be fixable by the user.