As mentioned above, your line might still be there.
Check that the internet is connected first. Go to menu > network local setting > network app > youtube. Select a category from the left hand column by pressing OK. If you have a good internet connection, you should see a list of clips in the middle column & a thumbnail preview in the right column. Don't worry if the clips won't actually play, as they don't always.
If your line is in Ccam, you can check if it is connected by going to Menu > network local setting > camds setup > ccam client setup > manage config files > CCcam.cfg. Your line should have a green tick next to it & it should show as Online. (if you don't see Camds setup in the network local setting menu press 6666).
If you don't see anything there, then it may be in MGCam.
Menu > network local setting > camds setup > MGCamd plug setup > manage config files > newcamd.list. Unfortunately, unlike CCcam, there is no indication to tell you that it's online.