Actually i have a Samsung led tv which runs with only NTSC Signals
and i have settop box it has only RCA cable output
So i bought a OREI XD-990 it has RCA and HDMI input and the output is HDMI
Some times I am getting errors like NO SIGNAL (Check the connections)
Some times it shows video for 2 sec and again goes OFF and this continues.
Why does this happen?