I have the Motorola DCT6412 DVR/Dual Tuner STB and I recently started experiencing audio issues where when I turned off the STB, and then turned it back on, audio doesn't come out through my TV or receiver. If I recycle the box by unplugging it boots up fine and audio works fine until I power down again (Power on remote).
I recently upgraded to the dual from single tuner, but had not experienced any issues in the first three weeks of use.
Here's my setup:
Optical audio out to Onkyo TX-SR502 6.1 CH Receiver
Samsung HLN507W DLP
Any insights anyone might have would be appreciated. Comcast is scheduled to come out to the house on Friday to take a look.