First off, I use the HDMI connection for video only as my reciever has no HDMI input. I do use the coaxial digital output. On a std def channel, I loose the left front speaker. If I switch to a HD channel it comes back. Center, right front and surrounds seem uneffected. That's it for audio.

My video problem is more annoying. About 3-5 times a week I loose video from the HDMI output. Nothing but scratchy lines with a white background. When this happens, I still have output from the analog outputs. To get the HDMI back, I have to go to the stb, unplug it, wait a minute and re-boot. This is a major PIA for me as the equipment is rack mounted in a sealed temp controlled cabinet. I even put a fan directly over the unit to insure that it was not getting to hot. It never gets above 75 degrees. Thanks,

Chip

Tried swapping out the STB for another? You'll find more on it in the Recorders section also since it's a DVR.