I just installed my slingbox 500. When I view TV via the slingbox app remotely and then return home to watch live tv, I have to use the slingbox remote to see TV. It seems my tv thinks the cable box is off even though I can clearly see it is on. Once I use the slingbox remote to go to live tv it works. Is there some way to get the slingbox to default to live tv so I don't have to add another remote to the experience of watching tv at home?