I know the Lnb on the dishpro 500 plus has two outputs, well in my case I am only using one cable at the moment and is plugged into the #2 slot of the lnb. It then runs to a dish pro plus seperator and into a DVR 625 dual output sat receiver. Which provides signal to the tv in my living room and my bedroom. Now I tried adding another receiver and plugged it into the #1 slot of the lnb and im not getting anything. I'm thinking that the #1 slot of the lnb is broken but my friend told me that if you are using a dual tuner DVR and use the "dish pro plus seperator" it'll disable the second output from the lnb. Is this true? Do i need to get a quad lnb then ? or is my #1 socket just busted ? any help is greatly appreciated.. thanks!