There are several things that could be causing this.
Follow each of these options until your issue is resolved:
Check the cabling on your receiver
It is possible that the cables connecting your Fibe receiver to your TV has become disconnected. Check the back of your receiver and TV to ensure all the cables are properly connected.
Reboot your receiver
- Press and hold-down the green POWER button on the front of your TV receiver for 5 seconds (until the red, green, and blue lights come on).
- Wait a few minutes for the reboot to take place. You may see a black screen during this time.
- Once the reboot completes, content from the channel that you last viewed appears.