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I just fixed mine with the same issue. The holding of the Advanced Surround button and Power button for five seconds reset the error, but a few seconds later it came back. So I ended up opening the unit up and replacing the short little HDMI cable connecting the front input board to the main HDMI board. This fixed the problem. Seems the way it was twisted in there damaged it over time and it needs replacing. Everything works as it should now. My model was a VSX-1023.