Hi there,
I work for an archival company in Australia and as such I work with cameras much like yours on a day-to-day basis. There could be a number of reasons you camera is doing this. First the simple things:
Check to make sure your camera is in playback mode. A black screen with timecode signals to me that you may be in 'camera' mode rather than in the playback mode. Switch your camera into "player" mode. After doing this make sure your tape is rewound all the way!
Next is to check if your tapes are blank. I have found before that some of my clients have labelled tapes but have not recorded any footage to them. This may result in a black or blue screen with no timecode ticking over.
Also make sure that the tape and the camcorder are...