Bought Samsung wall charger, standard HDMI cord, Samsung MHL adapter..using my.Samsung Galaxy S-2 mobile...that said, ive connected all to stream on my hdtv..screen is on, watching movie, then suddenly it goes black or fussy and says NO VIDEO SIGNAL! Tried troubleshooting, checking connections, inputs, but its ok for a while, then lose the signal again! My question is....why does it come on and off....is it my indoor tv digital antenna, or my Galaxy s2 fone?