As I said in other threads, my Sharp DT-510's color wheel is failing after 7 years of daily use. I opened it to lubricate the color wheel motor which brought it back to life (but for how long?) but while I was inside I saw every part was covered in this black stuff that stains my hands if I touch it. Even parts that were obviously initially silver are now completely black.
I don't smoke but my parents often invite friends that smoke non stop for hours and they've been coming about once a week for the last few years. Could the black stuff inside my projector be something other than that smoke? If not, I'll tell them I don't want them smoking here anymore because I'd like to extend the little bit of life this projector has left as long as possible as I'd rather not upgrade now since I'm about to move and would rather get a projector based on my new location which isn't decided yet. I don't care how much it might piss them off because I'm in a very hard financial situation and I'm the one that has to pay to replace my appliances their smoke is damaging, and I can only imagine what their smoke is doing to my $3000 laserjet printer.