I have a cw-600s Premium box and can not get the DP 34 switch to work with it. one dish 500 dual lnb pro at 100 and 119 and older dish at 61.5. all signal comming in very well. when run into DP 34 switch signal is lost after second input is connected. Was told this switch would work for my needs without any external power source. also read that this switch needs a dish pro adapter in order to work. i only have one box installed so far but intend to install two more if i can get this problem solved. anyone have the answer to my problem?