Well, I've had my unit back for 4 days after getting the HDMI board replaced, and it did get some good use on the first day, while not so much the last 3 (as I've been busy with other things), but today, it produced the dreaded "no sound, no icons" symptom again! This is not what I had hoped for. I did turn it off for 2 minutes, and then on again, and the sound did come back along with the icons, but this is not a good sign that it's still happening, just like with jrs'.