I have been using the components cable for watching my console, but I want to watch it through HDMI now, because I want to record gameplays. The problem is that the console video signal don't appear in the tv through the hdmi cable. I don't have it connected with the component cable anymore since you can not have both cables at the same time due to the size of the components cable, so I have the console connected to tv only with the hdmi cable, abd it should be enough to see the xbox signal, isn't it? I have to do something more? Why could be this happening?