1608 occasionally stops outputting audio
Setup is in the bedroom, a TiVo Mini locked to 1080i output feeding the 1608. The Mini is a network wired remote for the main TiVo which gives me access to all the live cable channels and recordings from the main unit. I have four Minis scattered through the house connected to the main TiVo.
Occasionally, if I pause and then resume the Mini, or if I switch what the Mini is doing from live cable feeds to playback of recorded material (and vice-versa) there will be no audio from the 1608.
The Info screen shows Dolby 5.1 coming in, and 5.1.2 (with the upmixer enabled) feeding the speakers, but there is no sound.
I have stored the "watch the TiVo" settings in the Smart Select 1 slot, and if I push that button while I have no sound, the sound returns, so I do have a workaround but it is cumbersome (and annoys my wife when she's watching alone). Also, switching to a different source on the 1608 and then switching back to the TiVo will restore sound most (but not all) of the time. The Smart Select 1 button works 100% of the time.
I moved the TiVo HDMI cable to the input closest to the output, changed the HDMI cable, unplugged the 1608 overnight as a soft reset, and even swapped in a Mini from another room, but the problem persists. I have had the 1608 for about a year, and it replaced a 1604 that I had for years and never had this problem. I seem to remember that maybe it started after some update or another, but I could be mistaken since the problem is intermittent.
Any ideas what else I could try?