This morning, I was checking my signal levels. On the 101 satellite, the signal levels were all at their usual 100 or 99 levels. On the 99ca, 99cb, and 103cb satellite, the transponders were at their usual levels around 95, but, on the 103ca satellite, all of the transponders were showing a signal level of 0. I tried randomly tuning to different channels, and I didn't find any channels without a signal. So, I'm not sure what is going on. I don't know whether their is something going on at DIRECTV's end or whether I have a dead LNB. Does anyone know what might be going on? Thanks.