I had the sound loss issue as well. My Tivos were not the problem in my case. My Onkyo receiver was the issue. When I talked to Onkyo they suggested I reset the receiver, which worked but it also removed any presets for surround sound, radio, etc. Pain in ass. Well, long story short. It failed under warranty, i had the option of money or fixing it. I chose money. I now own a nice little Integra that I love. Onkyo and Denon same company for a while. No longer quality stuff.