I searched and did not find anyone with this issue. After a vacation where all of my equipment was unplugged from the wall, I return to have the LEDs on top and front flicker then stop working. I suspect a power supply issue as previously mentioned in posts, but am not savvy enough to replace it. Two year old unit out of warrant that now completely cuts out at random times using HDMI. Pops a bit with optical cable (that might be the TV settings).
And I seek the wisdom of @KevinBif you've heard of this one. Also, I'm super curious - with all of the issues with Bar 48, what influenced you to purchase a Cinema 800???? I love (understatement) the brand also, but it seems that the Soundbar division isn't up to usual Klipsch quality standards. [I'm a newbie so the system won't let me message you directly]