I buy this model 4 year ago for my computer lab . from the very start I have trouble . the project image flicker and jump . I call right away and they replace my lamp for free . for the next 2 year it work sporadically . it would not come on the first time I turn it on , sometimes I have to unplug it . I call several time and be give the run around . finally a notice to extend my warrenty come . I extend it and call again . I be tell it be certainly because the lamp be get near the end of it be 1000-2000 hour -lrb- big difference , eh ? -rrb- . I explain there be no way it have be use for that many hour , and the tech support guy argue with I . I give up argue and try one of the thing he say -lrb- take out the lamp and remove the dust -rrb- . after that , it work consistantly . -lrb- when I could finally get it to work , I check the lamp hour ... it have run for 238 , no where near 1000 -rrb- . I think I be home free . I use it today and it be on for about a hour plus . I be away from it work on a computer when I hear a loud bang . I look up and the screen be blank . the darn lamp explode ! I hate to give up on InFocus all together , but I may have to .