Having some problems with my HT-7100DH. It is hdmi passthrough and for cable tv i have hdmi from box to receiver with optical for audio and hdmi to tv for video. I am having a lot of problems with frequent glitches in the sound, what i think to be called blinking? It will be playing normally then the blue light will turn off (not decoding) and the sound will go away for 1-2 seconds then the light turns back on and Dobly digital.... scrolls across the screen as if it just started decoding, even if the channel/program is not changing. can anyone explain the interruption? btw the cable box is a motorola...