I have one H20 HD receiver, a Slim Line 5 LNB for Satellite dish and a 6x8 switch. I have lost some of my HD Channels, like 231, Food Network and 244, USA, 245, TNT and 202 CNN along with my local broadcast channels. This is not a complete list, but partial..... We have reset the reciever, no change, I checked the dish, which is installed on a pole, concreted in ground, pole is straight, bubble is in middle of level, the dish bolts are all tight. nothing moves, I checked the 4 cable connections on the LNB, all were tight, no corrosion. I then checked the 4 connections from the LNB where they enter the 6x8 switch. all of them were good, tight and no corrosion. I then checked the cable on the bottom of the 6x8 switch, the cable that goes into house to the H20 receiver. It was tight, but, the inside was corroded/rusted and copper tip that sticks into the plug was rusted into.... I cut the end off, and put a new connector on and screwed into another out port on the 6x8 switch...no change.... I found another Slimline 5 LNB and installed it on the dish.... After installing that LNB, I reset the receiver and I was able to pickup 202, CNN, 245, TNT, but no local channels, 231, Food Network or 244, USA.... Is my problem in the switch? Could it be the used LNB that I put on was bad? Do the 4 cables coming from the LNB carry all the channels? If so, could I just use a barrel connector and connect one to the cable going into the house and bypass the switch?