I've had an issue with my Motorola 7232 HD DVR for several months now but it's just become too distracting to ignore. I have the STB hooked up to my Denon 1913 receiver via HDMI, though the problem still occurs when I plug the HDMI directly into my TV.
When watching certain channels (CW, MoreMAX, HBOZone, HBO2, HBOFamily and several others but CW is the worst) I get a LOT of crackling and popping audio whenever there's any bass in the scene at all. This happens regardless of the volume and if I play the scene back again the audio problems happen in the exact same place every time.
Here's the kicker. The problem doesn't exist with onDemand movies or TV shows. I've tested the same movie recorded on DVR against the onDemand version and the problems only exist for live or recorded shows. I'd normally say it's not an issue and that I could just watch onDemand, but not all channels or movies are offered.
I've tried:
Restarting the STB
Removing power from the device for a few minutes and booting back up
Changed Dynamic Range to 'None'
Setting the advanced HDMI audio setting to HDMI passthrough or LPCM
Hooking up the HDMI cable directly to my TV (problem still occurs through my TV speakers)
Three new HDMI cables from different manufacturers
Any advice?