I'm quite convinced most issues this units develops has to do with high temperatures and weak cooling. Various components may do bad over time as a result of excessive heat. I think this units are really more suitable for presentations rather than movie watching, where the whole system works harder. I have flickering on both power save and no save modes. I attached a small CPU fan to the front on the unit, where no fan appears, flowing air inside, and I can watch with no issues for hours, as long as the power save is ON, but once I switch back to OFF it happens again. This is a bummer as with power save ON the picture is a bit dark for movie watching (but not at all for presentations). Can you recall how Sharp fixed this issue when it happened the last time ? any circuit board replaced at the time ? It would be great if you could find out and post this information !! (you might have your older emails with Sharp regarding this flickering issue).
I'm thinking about replacing the fans with stronger and quieter ones. These units must run with a better cooling system for sure.