I apologize if this isn't the correct forum to post this thread in, but I think that this may be the most appropriate one, plus it gets the most traffic in the H/W section so... I have a simple H/T setup in the master bedroom; every once in a blue moon (well, not that infrequently) I'll get a very brief audio dropout whenever I'm watching a DVD movie. It rarely happens more than once during a viewing, lasts for no more than one second, and does not repeat itself in the same time position in the movie. Eventually, I had narrowed the cause to the fluorescent lighting in the master bathroom located adjacent to the bedroom; every time I flick the wall switch on while DVD movie audio dialog is taking place, I get the audio dropout. Dropout doesn't occur when I turn the fluorescent light off, and I mentioned DVD movie because no dropout occurs when audio source is non-digital, e.g., DBS via RCA audio cables. I haven't had a chance to narrow it down further but I suspect the actual culprit is the cheap video cable I substituted because I didn't have a coax digital cable on hand at the time I set up my H/T equipment, and never got around to getting a "real" coax digital audio cable since it seemed that the audio was working for me all this time, other than the dropouts, which I assumed was perhaps a bad receiver or perhaps DVD player (both of which I'm not ruling out entirely). I plan on swapping out the video cable for a dedicated coax digital audio one to see if it does the trick but I curious as to whether or not it's possible that a cheap video cable (essentially the cheapo patch cables that come with so many audio/video equipment) can pick up some sort of interference from fluorescent lighting (or at least when it initially turns on) due to the video cable possibly not rated at 75 ohms and/or being poorly shielded? Thanks!