I have a Gateway remote module that is connected to my LG TV. When I power off the TV and then switch it on again, there is a 'No signal' message. The only way I can make it work is to unplug the Gateway box and then plug it back in again. I have three other Gateway boxes and this not happening on those when they are connected to my other TVs. I have tried switching boxes but the same problem occurs when connect the other boxes to the LG TV. (The connection is via HDMI). Is this a compatibility problem with LG?