I hope you are turning off the LG before unplugging the HDMI cable as last thing you want is the LG's HDMI circuits getting fried. Speaking about the LG, did you select the input as satellite or Set-top box?
http://www.avsforum.com/forum/168-h...dmi-power-down-before-connect-disconnect.html
http://www.avsforum.com/forum/168-h...dmi-power-down-before-connect-disconnect.html