So I replaced the bulb in my Optoma HD70 after about 2000 hours of use, HUGE DIFFERENCE. It's like new again, except for those darn dust blobs.
I disassembled the whole projector (far out of warranty, as I've had it over 3 years), and cleaned the light mirrors and the color wheel. I can't seem to find where this dust is or where it got lodged, but I'm out of ideas.
I followed the guide here:
I event went a...