Just wondering if anyone else using older receivers has experienced this.... We have a refurb 722K that Dish sent to replace a dead unit earlier this year. Twice within the past month, the sound stopped working. On one occasion, the DVR was recording a show. The sound was fine on what was recorded, but we could not get sound on any live channel. A reset fixed it until late last night. Same thing happened as my wife was watching on TV2 (so not likely an HDMI issue). She said that after the 3:00 AM guide update, the sound was back. Software version is L924. Any ideas? Upgrading to the Hopper Duo is not an option due to increased monthly cost for a Joey on TV2. Thanks!