For some reason, I am having audio problems on my HR20-700. It's not on all channels but only some. I know specifically that on IFC and Starz, I get audio pops every 10 seconds or so. I have it connected to my stereo receivers. I disconnected them but its still there just not magnified by the speakers. Yet, other channels, the audio is perfect, including HD channels. How can the receiver be bad for some channels and not others. Has anyone else experienced this? This is actually my second receiver in 90 days because the first one just died (no power). They replaced it free of charge.