You have a bad power supply probably on the Philips reciever, or you are victom of the dreaded splitter in line between the Philips reciever and the LNB. My advice, take the new LNB back to the retailer and spend your money on a service call from Dtv for $70. Or call a local retailer and get a service call for as little as $35, depending on your area. Another point, if you don't have local channels, order them and get a triple lnb upgrade for free and perhaps a free reciever or two (that is depending on your area as well)