This worked for my 220. Try this: Turn off the projector, wait 45 seconds, turn on projector, once the projector powers up and the lite goes "black" accompanied by the yellow "lamp light" illuminating, press both brightness buttons simultaneously for at least 5 seconds. When you release them, the yellow "lamp life" light will go out and your "life" counter will be reset to zero hours. The lamp will work once again!
Note: This model displays the yellow "lamp light" at 150 hours remaining to prompt you that the 750 limit is close at hand. I know 250 lumens is a joke these days, but I got mine for free, my kids love it! This is a tough projector as the kids frequently watch TV on it for hours and then simply turn it off without going to standby (against my repeated reminders, of course), but it continues to work great. I can never go back to a "normal" TV again! Hope this helps someone.