Have a 722 just installed. I provided my installer a 50' run of HDMI cable & a nonpowered HDMI splitter to mirror my 1080P Mitsubishi to my 40" Westinghouse 1080i. When he plugged in the splitter both pictures went to hell. Individually was fine. Forgive my ignorance but I`m a newbie to this. Basically I`m trying to avoid the extra monthly fee for 2 HD setups. Watching the same channel in 2 rooms is not a problem for me. Why can`t/won`t Dish provide a 2 tuner HD? Advice on a splitter? Thanks.