Hi
With dock connected at boot-up; nothing happens and the green dock light stays off.
The green light which is placed near the eject button should glow green during normal operation and should turn off if the notebook has been disconnected.
If the light does not glow green, then I assume the notebook is not connected properly.
If you connect the notebook for the first time to the port replicator, an message should appear indicating the device connected to the port replicator are ready to use.
In my opinion there could be an issue with the pins or connectors…but the question is which connector could be affected: on Tecra side or port replicator side…
However, I think you should contact your dealer and should test another one.