Many members here are heavy viewers and most likely, the lamp of their PJ has already reached the 1000hr mark. Since the normal max lamp life of PJ is about 2000hrs, when you reach 50% of that, you begin to think of the replacement. I am not a heavy user and since 2007 I have used only around 600+ hrs of my lamp life. But I am also very interested in knowing what to do in case my lamp expires.