Zenith IQZ36Z46D ???

Question

Hello,
I just recently obtained a used 1997 Zenith Inteq model # IQZ36Z46D . I hear the sound just fine on the unit but have no picture or snow at all. The integral yoke-picture tube assembly is permanately bonded. I am not sure what to look for with such a problem and hope I can get some input.I am really not too electronic saavy.