All these years I had Dishnetwork with ONE receiver (DP-510) in living room and everything was working fine. I wanted to add one more receiver to my bed room to connect to TV2. I had an old receiver (dp-311) which I called dish customer service and added the 2nd receiver to my account so I can watch programs on both the TV's using both my receiver. I had done the installation setup myself. This is what I did in my basement (where all the cables connect). I had a 4 way splitter (silver color splitter) which I had used this way. IN => Connect the cable coming from Roof top Dishnetwork dish OUT1 => Cable going to the Receiver1 in my living room - TV1 OUT2 => Cable going to the receiver2 in my living room - TV2 I had configured both receivers and I can watch program well on both receivers when they are INDIVIDUALLY powered on. If I have RECEIVER-1 ON in my living room and when I go to the bed room to RECEIVER-2, then I get this message on the TV-2 "Error-4 problem with the multi-dish switch" Moral of the story: ============ I can watch programs on either one of the receiver ONLY when the other receiver is OFF. So I can watch programs in only one receiver at a time. If I turn both ON then I get the above message. Any help ????? Is the 4-way splitter what I am using , is it the right one or do I need to use something else ?