I've had the Dish receiver for a few weeks now and mostly using it on the Z1. Everything's fine and dandy downstairs but I recently tried to connect it to the upstairs HD RPTV and it doesn't output 1080i. I did try it when I got it the first few days and everything was OK. I then rush it downstairs again to the pj and it works fine. I've done all the necessary troubleshooting from same cables used, to acessing menus on the 811, etc. Now my question is, does anyone know of an existing issue on these HD receivers about them working on one display and nopt on another?