Optoma projector (by 9 users)

I have an optoma hd72 did the same thing. I pulled the bulb out and used a can of air/dust to clean it out, spraying it in all the vents as well. it fixed my problem also, and there wasn't much dust in it.

we have a optima hd65 projector that has been fine . now it starts the same ,sound ,picture etc. but then after 30 seconds the bulb turns off. hundreds of hours left on bulb. no warning lights.after i shut it off fan comes on as usual.

i hav bought sharp protector since 2 yrs n we use it for average 3 to 4 hrs in a day we hav already replaced the blub once as the person who sold it said that blub life is only 1800 hours n the blub has gone off again n the blub is costing Rs 18000 which very expensive iam regretting buying fr yr company as a friend of mine is using panasonic protecjor since 6yrs n use is for 8 hours a day n the bulb life is still on. please help me what am I suppose to do.

thankyou maya fr india.

Crazy, but its true!
I just bought a used Optima EP 758 an to my dismay a horizontal white lightning bolt flickered across my screen about every 15 second...after hours of setting it up! I found this blog and pulled the unit off the ceiling shaking my head in disbelief. After carefully unscrewing and pulling the case apart...sure enough, DUST! not a lot, but plenty on the fan wheel and on the inside of the case. I was too nervous to use my compressor (Especially at 90psi, enough to drive my framing gun) to blow it out, so I just used canned air and gently wipe EVERYTHING with a clean white (Easy to see what you picked up) undershirt (Thinner cotton). Put everything back together an WALLAH! FIXED!!! ...Crazy, just crazy!
Thank you for the fix blog 

yep, it also worked for me, on my Optoma EP716.
OptomaUSA wanted me to ship it to them to get it fixed, (I'm in France)....
and since it was not under warranty anymore, I decide to take it apart and clean it.(dust it off)
Which totally solved the problem!

Thanks so much for the tip, it was very much appreciated!

The Solution above works. My Acer PD525 would work great for about five minutes then start flickering, Changing to drap colors, and turn off. I replaced the bulb and still had the same problem. Thanks to this thread, I opened the box and dusted. It has been working great for 48 hrs and still kicking. Who would have thought dust would cause it to do that. Thanks so much. I was about to buy a new one because Acer Tech support is non existant unless you want to pay $2.50 a minute. Even if i had gotten a hold of them they would have had me send it in for repairs. This thread has saved me at least $1,000. Thanks again!!!