I have my old Dish 500 in my shop and am having the following problems. Strong signal on both 110 &119. Switch checks good. Signal strength is around 100 on both. If both connected to the SW21 switch I do not receive any 110 programing and some 119 programing. I just get the lost signal message. If I disconnect the 110, power off the 501 receiver and reset. The switch shows the 119 and I get all 119 programing. Vice versa if I connect the 110 only. If I power off, reconnect the 110 to the switch and reset the receiver, they are both recognized and show strong signal strength but I again do not have any 110 programing and the loss of some 119. I have changed the sw21 switch but have the same problem. This system was in good working order and was kept when I upgraded to a Dish 1000, so I know that it used to work just fine. It has been doing this for over a year but since it is in my shop I have just dealt with it by just using the 119 only, but since I am paying for an extra receiver each month I would like to have it running correctly. The dish has two dual lnb's and I am just connected to one side on each lnb. Any help would be appreciated.