I think this has been asked before, but as the search facility isn't working I hope you won't mind me asking again. I seem to recall that there is a way to see how many hours the lamp in a PLV-30 has done using a "secret" menu. The question is how do you access this? I am asking because the lamp replace indicator on my PLV-30 has come on and I don't think it has done anywhere near 2000 hours. Also the picture looks just as bright as it did when it was new.