I have a HD DVR reciever that is splitting out to 2 tvs. The initial install had the TV1 hooked up to my sd tv and TV2 hooked up to my HD tv. Now Im not sure why this was done this way but needless to say my HD content was being downgraded. So I moved the reciever and hooked it to what used to be TV2. So now my tv1 is hooked to the hd tv and tv2 is on the sd tv. Tv1 works perfect wonderful picture but tv2 no longer works. The tech guys said something about a diplexer needing to be switched. Can anyone help me so i do not have to pay a $99 service call?