[agoodtech]

does it display a channel number when it loads up? if not what does it display?

You screwed the coax cable on tight?

using hdmi? if so isit on the correct hdmi channel on your tv to where u moved it to?

try using a scart lead to see if u get a pic n then mayber alter the hdmi settings?

as people have said before in this post, the boxes don't know any different if both cables are live and have a correct signal level.