FIXED IT!!! Just had the green screen of death on my Vizio tv. Sometimes had audio and green screen sometimes had nothing. Switched from hdmi to component rca and still nothing. Usually the simplest and easiest solution is the right solution. Sometimes we tend to overthink things and over complicate it...not just on repairs but life in general :). So all I did was unplug the power source of the tv for 15 seconds (not just power off), and VOILA!!! Got everything back to normal. FYI I was running direct tv on it. Try it and see if t works. Good luck!