The display onthe front panel does not light up.
Bad picture/blocking error.
No sound and picture, but the front panel shows time.
The RCU is not working.
The remote control will not operate your STB.
The recording function is not working at all.
Main cable is not connected.
Signal is too strong.
Poor signal quality or bad interconnection.
The unit is in standby mode.
the batteries may need to replace. Any obstruction.
Hard-disk probel, connection problem, signal problem.
What to do
Check that the main cable is plugged into power socket.
Try a signal attenuator to the RF in port.
Check the antenna system, check cable connection.
Press the key on the RCU.
Replace batteries. Check there is nothing in the way of the path between remote and STB.
Check connected cable. Require the resell to check and solve this problem.