Hello all and thanks for reading; I was given a very nice Optoma HD80projector when a friend upgraded. The projector worked very well until the bulb died. I replaced it with an bulb that is NOT an original bulb but in fact an after market. (it was about 300.00 cheaper). my picture has a tremendous amount of "hot spots" or too much contrast. Is it the cheapo bulb or does it sound like I need to replace the unit entirely. I have tooled with all the different settings and if it gets better its a dull washed out pic. Thanks in advanced. (yesterday incorrectly put hd20 - it's actually an HD80.