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Optoma projector after on a short while the unit starts flashing diffrent colors through the picture andthen shuts down unit is about 1 1/2 years old

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Would need a model number to get this nailed down but it sound like you have a DLP projector, this might have a color wheel in it, sometimes when this fails you get flash of colors as the color wheel slows down then the unit sences that the color wheel has stoped and shuts down the unit

Posted on Mar 07, 2008

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Optoma HD80 flashing blue lights


Sound like the original color wheel for Optoma HD80 is bad.

If the unit has been moved when hot.

If not, try un-plugging the unit for a few minutes and re-connect.

Hope this helps

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HD70 DLP Projector: The projector is used and about a year old. It cur...


Did this start occurring after you replaced the lamp?

The reason I ask is I had the same issue after changing the lamp and it was caused because when I took out the old lamp I noticed dust in the lamp housing which I attempted to blow away.

This caused the problem because some dust got further into the projector, specifically around the color wheel. I sorted it out by taking the projector apart following the instructions here:

http://tantht.blogspot.com/2009/02/how-to-remove-dust-blobs-from-optoma.html

(note my HD70 was out of warranty, if yours is not, I would recommend contacting Optoma to get it fixed).

Follow the above instructions to step 14 and then locate the color wheel which is at the front of the projector behind a dark gray, plastic type square shaped cover.

You have to be very careful here, but remove the color wheel (there is one screw holding it in place) - note it

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4 Answers

Colors flickering


Easiest and cheapest to just fix it yourself! The problem is with dust/debris accumulation on the color wheel. Very simple to fix. Remove the lamp and you can see the color wheel. You may be able to clean it from that hole using compressed air. If not, you will have to take the outer casing off. A film will build up on the color wheel in certain environments, smoking, dusty areas, placement next to ceiling fans. To remove the film build up, use a q-tip with denatured alcohol. start from the inner part of the color wheel and work the q-tip upward towards the outer part of the wheel. you may have to remove the cover plate to the color wheel to clean the other side( side facing the lens). Not a big deal and will bring your projector back to its original vivid colors. As for LCD projectors, they are only good for one lamp. You will never get the full use out of a second lamp as the lcd panels degrade fairly quickly. Usually the blue lcd panel is the first to go. A DLP projector can last you for years and many replacement bulbs. Replacing a color wheel is fairly easy. Replacing lcd panels, not going to happen as they have to be calibrated and are very expensive. P.S. If you are a smoker and you do it in the same area as your projector, you will get a tar build-up inside the projector. The tar will accumulate on EVERYTHING and eventually lead to overheating as well as color wheel issues. The reason I mention this is I just repaired a Optoma EP721 (very similar to the HD65) that had this issue.

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1 Answer

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i had, have the same problem i also replaced the bulb then shortly after the power went out no standby light or anything. From what i've read so far it seems like a power supply issue so i ordered two power supplys from optoma 1 for lamp 1 for the unit waiting on delivery from CA they were $ 99 each if this work i'll be one happy camper. Three years no problems it's a great machine with incredible picture using 106" screen

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1 Answer

Optoma hd70 starts flashing colors


I removed the front cover and top panel, Using the Radio Shack dust removing spray, removed all dust from interior including circuit boards, color wheel ect, now it,s operating like a new projector.

Dec 21, 2009 | Optoma HD70 DLP Projector

1 Answer

I have a DLP Optoma projector. It's a few years old. When my wife and I turn it on, it usually shuts down after about 20 minutes of use. what can we do to solve that?


clean it out. it may be dusty inside. the dust keeps in the heat, and if the projector can't cool down, it cuts the heat source- the lamp. also see if the lamp is close to 2000 hours. it may need replacing.

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Mine did the same thing. The bulb is used up...replace the bulb. That fixed mine, working great again.

Oct 05, 2008 | Optoma HD72 Multimedia Projector

1 Answer

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Most DLP projectors have a colour wheel. It's usually hard to get at, and you may have to actually remove everything including the optical block from the projector to access it. This wheel turns on a motor just like a fan, and if it gets dirty it can act up just like a fan.

They are expensive to replace, so you might want to try taking it apart and cleaning it out. Add a small amount of 3 in 1 oil to the motor if you can.

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It's not a short, the blub is near the end of it's life ~ the optoma is designed to detect when the blub is about to blow and shuts itself down. Turning the projector upside down or right side up usually only gives you a brief reprieve (some have reported a modest amount of extra time gained) on the blub ~ but in the end it's on it's way out and the projector will shut down again.

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5 Answers

Optoma hd72 bulb turning off


This is NOT a bulb problem unless your "lamp" LED is lit, which you say it is not. Many people have reported this problem with the Optoma 72. You can send it in for warranty service (it has a 2-year warranty) to get the lamp controller chip replaced, but the problem may recur. Optoma does not appear to have a permanent solution to this problem. My projector has broken exactly like yours TWICE in a year. I haven't even needed to replace the original bulb yet. :(

Nov 05, 2006 | Optoma HD72 Multimedia Projector

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