Not sure of this is TV/HDMI related or Tivo related. The 30-seocnd skip (used sel-play-sel-30-sel code) does not make the tone sound any more... and on some occasions I notice that after changing a channel or skipping, the audio is muted for a few seconds. Never had that problem on this TV with Series 3... although my series 3 was connected with component cable since the HDMI port dies a few years ago. Anyone see these things on their Tivo? Any ideas?